Physics Unit 6.5

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magenta/green

A green shirt will absorb _____ light and reflect _________ light.

White Light

Combination of all colors

complementary colors of light

Combinations of two light colors which can be mixed together in equal intensities to produce white light.

What cells do the retina have that that interpret light?

Cone cells

As opposed to concave lenses, which characteristic of convex lenses makes them useful in microscopes? Convex lenses can produce images larger than objects. Convex lenses can produce upright images. Convex lenses cause light rays to spread out. Convex lenses cause light rays to refract.

Convex lenses can produce images larger than objects.

A ray diagram is shown. Which letter represents the location of the image produced by the lens? (concave)

NOT Y

A ray diagram is shown. Which letter represents the location of the image produced by the lens? (convex)

NOT Y

A process that modifies light waves so they vibrate in a single plane is referred to as

Polarization

Light that reflects a t glancing angles from nonmetallic surfaces, such as glass, water, or roads is

Polarized parallel to the surface

What types of colors of light mix together to give white?

Primary colors

Scattering

Process in which sound or light is absorbed and re-emitted in all directions

Opaque

Quality of material that absorbs light without remission

Into which colors is light dispersed to?

ROYGBIV: *R*ed *O*range *Y*ellow *G*reen *B*lue *I*ndigo *V*iolet

Electromagnetic Spectrum

Radio Waves Microwaves Infrared Light Ultraviolet Gamma Rays

"Shortcut" equation when only given the frequency of a wave

T= 1/F T= period (s) F= frequency (Hz)

Which best explains what happens when an electron moves from an excited state to the ground state? The electron absorbs energy as it moves to a lower energy level. The electron absorbs energy as it moves to a higher energy level. The electron releases energy as it moves to a higher energy level. The electron releases energy as it moves to a lower energy level.

The electron releases energy as it moves to a lower energy level.

Which describes a relationship when calculating the energy of a photon?

The energy of the photon is directly proportional to frequency.

What is the rest position of a wave diagram?

The normal line (cuts the wave in half)

Frequency

The number of complete waves that pass a given point in a certain amount of time Measured in Hertz (Hz) Represented as frequency (f)

Radio stations use electromagnetic waves for broadcasting. The chart shows different frequencies of waves used by radio stations. Which radio station has the wave with the longest wavelength? W X Y Z

A ray diagram is shown. What does the letter X represent? angle of incidence angle of reflection normal medium

angle of incidence

A ray diagram is shown. What does represent? index of refraction index of reflection angle of incidence angle of refraction

angle of refraction

On a transmitter, a(n) _____ sends modulated carrier waves into the air.

antenna

The primary job of a(n) _____ on a receiver is to capture modified radio waves.

antenna

In the lens equation, the variable do represents the distance of the object from the ______.

lens

A magnifying lens under water will magnify more, less, or the same?

less

compared to the frequency of ultra violet waves, the frequency of infrared waves is

less

The critical angle for a light from the bottom of a swimming pool shinning upward towards the pool's surface is the angle where

light is refracted so it just skims the pool surface

A ray diagram for a refracted light ray is shown. What does the dashed line represent? medium boundary normal incident ray

normal

A ray diagram for a refracted light ray is shown. What does the dashed line represent? medium boundary normal incident ray

normal

Leo places a plant in front of the center of curvature of a concave mirror. Which characteristics will the image of the plant have? Check all that apply. real virtual inverted upright smaller larger same size

real inverted smaller

magenta + yellow =

red

white - cyan =

red

white - green - blue =

red

magenta

red + blue = ?

yellow

red + green = ?

Red cones see

red and yellow wavelengths

when you see a "wet spot" mirage on the road in front of you, you are most likely seeing

sky

Compared to its speed in air, the speed of light in water is

slower

All lenses rely on having a

slower speed in the lens

Total Internal Reflection

the complete reflection that takes place within a substance when the angle of incidence of light striking the surface boundary is less than the critical angle

white - magenta - green = ...

black

magenta + cyan =

blue

white - yellow =

blue

cyan

blue + green = ?

white

blue + yellow = ?

blue cones see

blue and violet wavelengths

Law of reflection

(Regular or specular refraction) The angle of incidence equals the angle of reflection

A 2 cm object is 10 cm from a convex lens that has a focal length of 4.4 cm. The image is 8 cm from the lens. The height of the image, to the tenths place, is _____ cm.

-1.6

A 5.0 cm object is 12.0 cm from a concave mirror that has a focal length of 24.0 cm. The distance between the image and the mirror is ______ cm.

-24

A 14 cm object is 20 cm from a concave lens that has a focal length of -10 cm. The distance of the image from the lens, rounded to the nearest tenth, is _____ cm.

-6.7

A 14 cm object is 20 cm from a concave lens that has a focal length of -10 cm. The distance of the image from the lens, rounded to the nearest tenth, is cm.

-6.7

What is the frequency of an electromagnetic wave having a wavelength of 300,000 km?

1 hz

What are characteristics of absorption spectra? Check all that apply.

1, 3, & 5 Light is absorbed, which produces characteristic lines. Lines are dark on a visible light background. Lines are produced by electrons being excited.

What is the energy of a photon with a frequency of 2.2 × 1016 Hz? Planck's constant is 6.63 × 10-34 J•s. 1.5 × 10-17 J 8.8 × 10-17 J 1.5 × 10-16 J 8.8 × 10-16 J

1.5 × 10-17 J

What is the energy of a photon with a frequency of 2.2 × 1016 Hz? Planck's constant is 6.63 × 10-34 J•s. 1.5 × 10-17 J 8.8 × 10-17 J 1.5 × 10-16 J 8.8 × 10-16 J

1.5 × 10-17 J

A photon has a frequency of 2.9 × 10-16 Hz. Planck's constant is 6.63 × 10-34 J•s. The energy of the photon, to the nearest tenths place, is ______ × 10-49 J.

1.9

Lens equation

1/f = 1/do + 1/di

A 12-inch object is placed 30 inches in front of a plane mirror. A ray of light from the object strikes the mirror at a 45-degree angle. How tall is the image produced by the mirror? 12 inches 30 inches 24 inches 45 inches

12 inches

What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45.0° when it passes through a diffraction grating that has 500.0 lines per mm? 236 nm 353 nm 943 nm 1414 nm

1414 nm

An incident light ray strikes water at an angle of 20 degrees. The index of refraction of air is 1.0003, and the index of refraction of water is 1.33. The angle of refraction rounded to the nearest whole number is ______°.

What is the energy of a photon with a frequency of 3.6 × 1015 Hz? Planck's constant is 6.63 × 10-34 J•s. 1.8 × 10-49 J 2.4 × 10-19 J 1.8 × 10-18 J 2.4 × 10-18 J

2.4 × 10-18 J

An incident ray of light strikes water at an angle of 30°. The index of refraction of air is 1.0003, and the index of refraction of water is 1.33. What is the angle of refraction rounded to the nearest whole number? 22° 24° 30° 42°

22°

The image produced by an object is -10.0 cm from a concave mirror that has a focal length of 5.0 cm. The distance of the object from the mirror, rounded to the nearest whole centimeter, is _____ cm.

How far is a light-second?

300,000 km

The distance between slits on a diffraction grating is 0.60 mm, and one of the angles of diffraction is 0.30°. The light forms a second-order bright band. How large is the path difference? 1047 nm 1571 nm 3142 nm 6284 nm

3142 nm

Light with a wavelength of about 510 nm is made to pass through a diffraction grating. The angle formed between the path of the incident light and the diffracted light is 12.0° and forms a first-order bright band. The number of lines per mm in the diffraction grating, rounded to the nearest whole number, is _____ lines per mm.

408

Violet light has a frequency of 7.26 × 1014 Hz and travels at a speed of 3.00 × 108 m/s. The wavelength of violet light, rounded to the nearest nanometer, is nm.

413

What is the approximate wavelength of a light whose second-order dark band forms a diffraction angle of 15.0° when it passes through a diffraction grating that has 250.0 lines per mm? 26 nm 32 nm 414 nm 518 nm

414 nm

Suppose you stand 2m in front of a mirror, How far away from you is your image?

A photon has 3.4 × 10-18 joules of energy. Planck's constant is 6.63 × 10-34 J•s. What is the frequency of the photon? 5.12 × 10^-15 Hz 1.95 × 10^16 Hz 5.12 × 10^15 Hz 1.95 × 10^-16 Hz

5.12 × 10^15 Hz

Green light has a wavelength of about 510 nm and travels at a speed of 3.00 × 108 m/s. The frequency of green light, rounded to the nearest tenth and written in scientific notation, is ______ × 10^14 Hz.

5.9

An ideal polarizing filter will transmit 50%of non polarized light incident on it. How much light is transmitted by two ideal polarizing filters that are oriented with their axes parallel to each other?

50%

A light with a second-order dark band forms a diffraction angle of 20.0°. The diffraction grating has 200.0 lines per mm. The wavelength of the light, to the nearest whole number, is _____ nm.

684

If an electron vibrates up and down 1000 times each second, it generates an electromagnetic wave having a A. Frequency of 1000 Hz B seed of 1000 m/s C, period of 1000 s D.Wavelength of 1000m

The table below shows the wavelengths of visible light that correspond to different colors. A student analyzes the emission spectrum of an unknown element and observes strong lines at the following wavelengths: 656 nm, 486 nm, 434 nm. Which absorption spectrum is the student most likely viewing?

Which transition by an electron will release the greatest amount of energy? A B C D

A (from the farthest ring to the closest ring)

all/nothing (black)

A black shirt will absorb ___________ light and reflect _________. (light)

yellow/blue

A blue shirt will absorb _____ light and reflect ________ light.

What is white light made up of?

A combination of all colors -- as is apparent when you shine a white light through a prism -- so anything that appears white reflects all wavelengths of light.

Which statement describes characteristics of a concave lens? A concave lens diverges light and curves inward. A concave lens diverges light and curves outward. A concave lens converges light and curves inward. A concave lens converges light and curves outward.

A concave lens diverges light and curves inward.

Which statement describes characteristics of a convex lens? A convex lens diverges light and curves inward. A convex lens diverges light and curves outward. A convex lens converges light and curves inward. A convex lens converges light and curves outward.

A convex lens converges light and curves outward.

red/cyan

A cyan shirt will absorb__________ light and reflect ____________ light.

green/magenta

A magenta shirt will absorb __________ light and reflect _________ light.

A ray diagram is shown. Which letter represents the location of the image produced by the lens? W X Y Z

A picture of a tree it would be X because it is in front of the concave mirror and where the two rays intersect

complementary colors

A primary and secondary color positioned directly opposite each other that are added together.

cyan/red

A red shirt will absorb ______light and reflect _________ light.

Transverse waves

A wave in which the particles move perpendicular to the direction of wave motion

Longitudinal waves

A wave in which the particles of the medium vibrate parallel to the direction of wave motion

Electromagnetic waves

A wave that can transfer electric and magnetic energy through space

blue/yellow

A yellow shirt will absorb _______ light and reflect _________ light.

Which transition by an electron will release the greatest amount of energy?

A student has an unknown sample. How can spectroscopy be used to identify the sample?

A. It can identify the elements in the sample

Isla made a diagram to compare X-rays and radio waves. What should Isla write in the areas marked A, B, and C? A: Has a longer wavelength B: Can travel only through matter C: Has a higher frequency A: Has a higher frequency B: Can travel only through matter C: Has a longer wavelength A: Has a higher frequency B: Travels at the same speed C: Has a longer wavelength A: Has a longer wavelength B: Travels at the same speed C: Has a higher frequency

A: Has a higher frequency B: Travels at the same speed C: Has a longer wavelength

Mirage

An example of atmospheric refraction

Angle of Reflection

Angle between reflected ray and normal

Angle of Incidence

Angle between the incident ray and normal

Law of Reflection

Angle of Incidence = Angle of Reflection

Critical Angle

Angle of incidence at which light is refracted at a 90 degree and with respect to the normal. The intensity is therefore 0.

Which describes the relationship between the frequency, wavelength, and speed of a wave as the wave travels through different media? As speed changes, wavelength changes and frequency remains constant. As speed changes, frequency changes and wavelength remains constant. As speed changes, wavelength and frequency change. As speed changes, wavelength and frequency remain constant.

As speed changes, wavelength changes and frequency remains constant.

Light reflected from a lake surface is polarized A. randomly B. horizontally C. vertically

The emission spectrum of the element lithium is shown below. What is the best estimate of the color that will be seen when a sample of lithium gas absorbs a lot of energy?

B. Mix of red and orange

The main difference between a radio wave and a sound wave is it's

Basic nature

Refraction

Bending of waves toward or away from the normal as wave enters a new medium with a different index of refraction

white - red - cyan

Black

Cyan

Blue + Green

What is the main difference between the Schrödinger model and the Bohr atomic model? Schrödinger believed that electrons could only exist in orbits, but Bohr stated that electrons could be found anywhere in the atom. Bohr believed electron orbits were circular, but Schrödinger's equations represent complex shapes describing the probable locations of electrons. The Bohr model did not explain the emission and absorption spectrum, but the energy levels described by Schrödinger explained this property. Bohr believed that the electrons circle the nucleus because positive particles attract negative particles, while Schrödinger believed that an electron was a wave.

Bohr believed electron orbits were circular, but Schrödinger's equations represent complex shapes describing the probable locations of electrons.

Glass is transparent to visible light, bit not to

Both a and b

How are amplitude modulation and frequency modulation techniques similar? Both are used by cell phones to produce images. Both transform electrical signals into sound waves. Both modify the pulse of a carrier wave. Both are used by radio stations to transmit sound.

Both are used by radio stations to transmit sound.

The emission spectrum of iodine is shown below. Which is the absorption spectrum?

What are cones?

Cells that change radiant energy into electrical impulses (energy).

What are rods?

Cells that help us see varying intensities of light. They are helpful in night vision.

What does wearing tinted glasses do?

Changes the color of almost everything you see.

A table of the visible light spectrum is shown below. Tyrone analyzes the emission spectrum of an unknown element. He observes two discrete lines at 600 nm and 650 nm, and he sees many lines corresponding to shorter wavelengths, with the strongest line being at 475 nm. Which emission spectrum is Tyrone most likely analyzing?

C match colored lines with color values

The emission spectrum of iodine is shown below.

C match the colored lines with the dark lines

How does refraction support the particle theory of light?

C. forces push and pull... I googled it and its something with forces

Effects seismic waves

Can cause horizontal/vertical motion (reileigh) or horizontal motion (Love waves)

Which best compares convex and concave mirrors? Convex mirrors produce only real images, and concave mirrors produce real and virtual images. Convex mirrors produce only virtual images, and concave mirrors produce real and virtual images. Concave mirrors produce only real images, and convex mirrors produce real and virtual images. Concave mirrors produce only virtual images, and convex mirrors produce real and virtual images.

Convex mirrors produce only virtual images, and concave mirrors produce real and virtual images.

Parts of a wave

Crest/Trough/Wavelength/Amplitude

Which is the correct formula for finding the frequency of an electromagnetic wave? f = c - f = f = + c f =

Which of these electromagnetic waves has the shortest wave length? A. infrared waves B. light waves C. radio waves D. x-rays

Which shows the correct lens equation?

D 1/f= 1/d₀ + 1/d₁

An absorption spectrum of oxygen is shown below. What is most likely the emission spectrum of oxygen?

D match black lines with colored lines

Which best explains what happens when an electron moves from an excited state to the ground state?

D. The electron releases energy as it moves to a lower energy level.

What is released when an excited electron returns to a lower energy state?

D. electromagnetic radiation

Kayla drew two ray diagrams to compare the behavior of light rays. What do the diagrams illustrate? Diagram X shows reflection, and diagram Y shows refraction from a less dense to a denser medium. Diagram X shows refraction from a less dense to a denser medium, and diagram Y shows reflection. Diagram X shows reflection, and diagram Y shows refraction from a denser to a less dense medium. Diagram X shows refraction from a denser to a less dense medium, and diagram Y shows reflection.

Diagram X shows refraction from a denser to a less dense medium, and diagram Y shows reflection.

What are colors of light?

Different wavelengths of electromagnetic radiation.

What is color?

Different wavelengths of electromagnetic radiation. Red light has longer wavelengths and violet light has shorter wavelengths

Hilda looks at a CD and sees different colors. Which best explains why she sees different colors when light strikes a CD? Some wavelengths of light are absorbed by the CD. Different wavelengths of light bend at different angles. The smooth surface of a CD causes wavelengths of light to scatter. The rough surface of a CD causes wavelengths of light to bend at the same angle.

Different wavelengths of light bend at different angles.

Color Spectrum

Discovered by Newton: ROYGBIV

Focal Length

Distance from the center of a lens to the focal point

Which statement describes how rays behave when they travel through media during reflection and refraction? During refraction, rays stay in the original medium, and during reflection, rays pass into a new medium. During reflection, rays stay in the original medium, and during refraction, rays pass into a new medium. During reflection and refraction, rays stay in the original medium. During reflection and refraction, rays pass into a new medium.

During reflection, rays stay in the original medium, and during refraction, rays pass into a new medium.

What is the formula for calculating the energy of a photon? E = h - f E = E = h + f E = hf

E = hf

What is the formula for calculating the energy of a photon? E = h - f E = E = h + f E = hf

E = hf

Rays of light strike a bumpy road and are reflected. What can be predicted about the reflected rays? They will not follow the law of reflection. Each will reflect at the exact same angle of reflection. They will all travel in the same direction. Each will reflect at an angle equal to its angle of incidence.

Each will reflect at an angle equal to its angle of incidence.

Maxwell's Explanation

Electric fields changed magnetic fields producing a electromagnetic wave

Light

Electromagnetic wave with constantly changing electric and magnetic fields that behaves as both a particle and a wave in the range of 400-700 mm

Which statement is part of Bohr's atomic model? Electrons absorb or emit light when they change energy levels. Electrons with the highest energy are found with orbits of the smallest radius. Electrons exist as waves and clouds of probability with specific orbits and shapes. Electrons orbit the nucleus in narrow ellipses, like how the planets orbit the Sun.

Electrons absorb or emit light when they change energy levels.

Photoelectric effect

Emission (leaving) of electrons from a metal surface when light shines on it

To get the exact color what do primary colors have to?

Equal in amount

If and electron vibrates up and down 1000 times each second, it generates an electromagnetic wave having a

Frequency of 1000 hz

Umbra

Full shadow

What letter does λ represent?

Greek letter *Lambda*

Which statement best describes the ideas of two scientists who studied properties of light? Newton and Maxwell had similar ideas about light being made of particles. Hertz extended Maxwell's idea that light is produced by the interaction of electric and magnetic fields. Young supported Newton's idea of the wave theory of light after observing light spread out in all directions. Huygens agreed with Maxwell that light has properties of both particles and waves.

Hertz extended Maxwell's idea that light is produced by the interaction of electric and magnetic fields.

Crest

Highest point of a wave

Light reflected from a lake surface is polarized

Horizontally

yellow

If a paper absorbs blue light and white light (RGB) is reflected onto the paper, what color will the paper appear?

magenta

If a paper absorbs green light and white light (RGB) is reflected onto a paper, what color will the paper appear?

cyan

If a paper absorbs red light and white light (RGB) is reflected onto a paper, what color will the paper appear?

cyan

If green and blue light are reflected onto paper, what color will the paper appear where the colors overlap?

magenta

If red and blue light are reflected onto paper, what color will the paper appear where the colors overlap?

yellow

If red and green light are reflected onto paper, what color will the paper appear where the colors overlap?

Examples/Uses of electromagnetic waves

Infrared radiation (IR), visible light (VIS), ultraviolet light (UV), X-rays, and gamma rays

Heat lamps give off mostly

Infrared rays

What happens to light when it strikes the inside surface of a smooth, curved mirror? It bounces in random directions. It bounces back toward a single spot. It passes through the mirror and moves in random directions. It passes through the mirror and moves in a straight line.

It bounces back toward a single spot.

Which best describes the surface of a concave mirror? It is flat. It is textured. It curves outward. It curves inward.

It curves inward

As the frequency of electromagnetic waves increases, what happens to the wavelength? It increases. It decreases. It fluctuates. It remains constant.

It decreases.

Why are some animals able to see some colors but others cannot?

It depends on the types of cones that they have.

What does the brain do after the cone cells change radiant energy into electrical impulses (energy)?

It interprets the electrical impulses as colors.

How is an image produced by a plane mirror different than an image produced by a convex mirror? It is smaller than the object. It is the same size as the object. It is inverted. It is upright.

It is the same size as the object.

A ray diagram is shown. Which describes the image? It is virtual and in front of the mirror. It is virtual and behind the mirror. It is real and in front of the mirror. It is real and behind the mirror.

It is virtual and behind the mirror.

What happens when you a add two primary colors?

It makes a secondary color.

Why does a blue bowl look blue?

It primarily reflects blue light and absorbs more of the other colors of light.

A ray diagram is shown. Which best explains why the diagram shows refraction but not reflection? It shows an incident ray. It shows that the ray is changing direction. It shows the ray passing through the boundary. It shows that angles form between the rays and the normal.

It shows the ray passing through the boundary.

Which best describes what happens to sunlight after it passes through the keyhole of a door? It converges into one particular shadow region. It spreads out into multiple shadow regions. It bends back toward the door. It scatters back toward the door.

It spreads out into multiple shadow regions.

The ray diagram shows a candle that is placed between the focal point and the mirror. Which best describes the image that will be produced compared with the object? It will be smaller and upright. It will be smaller and inverted. It will be larger and upright. It will be larger and inverted.

It will be larger and upright.

Jasmine broke the antenna on her radio receiver. How will this most likely affect Jasmine's radio? It will not change the amplitude of the carrier waves. It will not change the frequency of the carrier waves. It will not send out modulated radio waves. It will not capture modulated radio waves.

It will not capture modulated radio waves.

What causes diffraction that results in a fuzzy glow around a full moon? Moonlight converges into a single area around the moon called a shadow region. Moonlight bends toward a single area around the moon called a shadow region. Light from the Sun reflecting off the moon bends around particles in Earth's atmosphere and then spreads out. Light from the Sun reflecting off the moon then reflects off particles in Earth's atmosphere and scatters.

Light from the Sun reflecting off the moon bends around particles in Earth's atmosphere and then spreads out.

Huygen's Theory

Light is a Wave

NOT Convex lenses cause light rays to spread out.

What are characteristics of absorption spectra? Check all that apply. Light is absorbed, which produces characteristic lines. Light is emitted, which produces characteristic lines. Lines are dark on a visible light background. Lines are brightly colored on a black background. Lines are produced by electrons being excited. Lines are produced from electrons returning to a lower energy level.

Light is absorbed, which produces characteristic lines. Lines are dark on a visible light background. Lines are produced by electrons being excited.

What causes the appearance of lines in an emission spectrum? Light is absorbed as an electron moves to a higher energy state. Light is released as an electron moves to a lower energy state. An electron is released as light when it moves to a lower energy state. An electron is released as light when it moves to a higher energy state.

Light is released as an electron moves to a lower energy state.

Which observation supports the idea that light is made of particles? Light is produced by the interaction of magnetic and electric fields. Light spreads out after passing through an opening. Light diffracts when it hits a barrier. Light moves in a straight path.

Light moves in a straight path.

Young's Experiment

Light through two slits displayed diffraction and interference, and was therefore a wave

Einstein's Theory

Light traveled as a way but on the quantum level contained condensed massless packets of energy called Photons

Newton's Theory

Light was made of small hard particles traveling at very fast rates (Crepuscular Theory)

Compared to the wavelength of ultraviolet waves, the wavelength of infrared waves is

Longer

Light waves are

Longitudinal waves

Trough

Lowest point of a wave

Which radio wave technologies would be unaffected by satellites that are not working properly? space communication and television broadcasting television broadcasting and GPS MRI and radio telescopes radio telescopes and space communication

MRI and Radio telescopes

Subtractive Primary Colors

Magenta, Yellow, Cyan, and Black

Photon

Massless bundle of concentrated electromagnetic energy

What is the wavelength of an electromagnetic wave that has a frequency of 1 hz

More then 1 m

A ray diagram without the produced image is shown. Which describes the image produced by the lens? smaller than the object and upright smaller than the object and inverted real and upright real and inverted

NOT smaller than the object and inverted

Frank and Lisa are analyzing the chart, which shows the speed at which light travels through different media. Frank says that light travels through diamond with the greatest frequency. Lisa says that light travels through air with the greatest frequency. Which best describes the accuracy of these statements? Frank is correct because light travels through diamond at the slowest speed, and speed and frequency have an inverse relationship. Lisa is correct because light travels through air at the fastest speed, and speed and frequency have a direct relationship. Neither person is correct because light does not change frequency when it travels through different media. Both people are correct because light has both an inverse and a direct relationship with frequency, depending on the media.

Neither person is correct because light does not change frequency when it travels through different media.

Are light and primary colors of paint the same?

A 6 cm object is 8 cm from a convex lens that has a focal length of 2.7 cm. The image is 4 cm from the lens. The height of the image is ___ cm.

Not -4

Virtual image

Occurs when light does not really reach a location in the mirror

Diffuse Reflection

Occurs when light is incident on a rough surface and scatters in many direction

Dispersion in refraction

Occurs when white light travels through a prism and breaks up into a range of colors

Example surface waves

Ocean waves

Polarization

Only one direction of preferred vector allowed through

Light does not pass through what kind of materials?

Opaque

"S" vs "P" waves

P= Primary waves are longitudinal waves S= Secondary waves are transverse waves

Penumbra

Partial shadow

Photons

Particles of light. Light rays have photons which go through the metal and are emitted as electrons in the photoelectric effect.

A ray of light strikes a smooth surface and is reflected. The angle of incidence is 35°. What can be predicted about the angle of reflection? Rays will bounce in all directions, so the angle of reflection will be random. Rays will bounce in all directions, so the angle of reflection will be less than 35°. Rays will follow the law of reflection, so the angle of reflection will be 35°. Rays will follow the law of reflection, so the angle of reflection will be random.

Rays will follow the law of reflection, so the angle of reflection will be 35°.

Magenta

Red + Blue

Yellow

Red + Green

white

Red + cyan = ?

Additive Primary Colors

Red, Blue, Green

Wave or particle?

Reflection and refraction = wave and particle Photoelectric effect = particle Diffraction, interference, resonance = waves

Rainbow

Requires that light source be behind viewer and relies upon Dispersion, Total Internal Reflection, and Refraction

Surface waves

Seismic waves that travel along the outer layer of Earth

Pigment

Selectively absorbs color whereas light selectively adds color

Dispersion

Separation of light into colors arranged by their frequency

The shadow producers by an object held close to a price of paper in sunlight will be

Sharp

Electromagnetic waves with higher frequencies have wavelengths that are

Shorter

Compared to it's speed in air, the speed of light in water is

Slower

What is NOT an electromagnetic wave?

Sound

Which of the following is. It not electromagnetic wave?

Sound

Which of the following are fundamentally different from the others?

Sound waves

Examples/Uses of mechanical waves

Sound waves and seismic waves are the most common mechanical waves

Which best explains why an MRI is useful for diagnosing cancer but ineffective in treating it? The frequency of the radio waves used is so high that the waves cannot be used to target specific cells. The wavelength of the radio waves used is so short that the waves cannot be used to target specific cells. The amount of energy carried by radio waves is enough to provide images but not enough to kill cells. The amount of energy carried by radio waves is so high that it provides images but can also damage cells.

The amount of energy carried by radio waves is enough to provide images but not enough to kill cells.

Refraction

The bending of a wave as it enters a new medium at an angle

Diffraction

The bending of a wave as it moves around an obstacle or passes through a narrow opening

Reflection

The bouncing back of an object or a wave when it hits a surface through which it cannot pass

With a colored filter, what does the color of a object become?

The color of the light that the filter transmits. (e.g., yellow filters makes the object take on a yellow color, rose-colored filters makes everything look rose colored)

Interference

The combination of two or more waves that results in a single wave

Perception of depth is given by

The combination of views I the eye-brain system

A ray diagram is shown. Which statement best describes the diagram? The diagram shows refraction, and medium 1 is denser than medium 2. The diagram shows refraction, and medium 1 is less dense than medium 2. The diagram shows reflection, and medium 1 is less dense than medium 2. The diagram shows reflection, and medium 1 is denser than medium 2.

The diagram shows refraction, and medium 1 is less dense than medium 2.

Wavelenght

The distance between the crest of one wave and the crest of the next wave Measured in metres (m) Represented as lambda (λ)

Which describes a relationship when calculating the energy of a photon? The energy of the photon is directly proportional to frequency. The energy of the photon is inversely proportional to frequency. As the energy of the photon increases, Planck's constant increases. As the energy of the photon increases, Planck's constant decreases.

The energy of the photon is directly proportional to frequency.

Wilam made a chart to summarize the results of experiments with the photoelectric effect. Which best describes how to correct Wilam's error? The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons. The second result should state that as soon as light struck the metal, protons were ejected. The second result should state that just before light struck the metal, electrons were ejected. The third result should state that the kinetic energy of the ejected electrons depends only on the frequency of the photons.

The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons.

Suppose the microphone on an AM radio is not working properly. Which best explains how this will affect the process of amplitude modulation? The frequency of the carrier wave will be modified instead of the amplitude. Sound waves will not be transformed into electrical signals. Electrical signals will not be transformed into sound waves. The pulse of the carrier wave will be modified instead of the amplitude.

The frequency of the carrier wave will be modified instead of the amplitude. Sound waves will not be transformed into electrical signals. The pulse of the carrier wave will be modified instead of the amplitude.

Amplitude

The height of a wave (from the rest position to the crest/trough)

Byron draws a ray diagram to show how an image is produced by a lens. Which describes Byron's error? The image should be smaller than the object. The incident ray labeled X should continue moving in the same direction. The image should be inverted instead of upright. The incident ray labeled Y should continue moving in the same direction.

The image should be smaller than the object.

Alexis is studying how lenses work. She looks through a magnifying glass and through the peephole of a door. Which best describes a difference between the lenses used in these two devices? The lens in the magnifying glass can produce both real and virtual images, but the lens in the peephole can produce only real images. The lens in the magnifying glass can produce only real images, but the lens in the peephole can produce both real and virtual images. The lens in the magnifying glass can produce both upright and inverted images, but the lens in the peephole can produce only upright images. The lens in the magnifying glass can produce only inverted images, but the lens in the peephole can produce inverted and upright images.

The lens in the magnifying glass can produce both upright and inverted images, but the lens in the peephole can produce only upright images.

Light strikes a smooth wooden tabletop. What happens to the light after it is reflected? The light rays bounce off the table and all move in the same direction. The light rays bounce off the table and move in different directions. The light rays pass through the table and all move in the same direction. The light rays pass through the table and move in different directions.

The light rays bounce off the table and all move in the same direction.

Stars twinkle when seen from earth at night. When seen from the moon, stars

don't twinkle

Jessie draws a ray diagram to show how an image of a candle is produced by a concave mirror when the candle is placed in front of the center of curvature. Jessie thinks the image should be virtual and behind the mirror. Which best describes Jessie's error? The object should be placed anywhere on the principal axis. The object should be at the center of the curvature. The object should be between the center and vertex. The object should be between the focal point and vertex.

The object should be between the focal point and vertex.

What happened when physicists tried to observe the electrons?

The observer collapsed the wave function by observing. The electron produced a pattern of two bands not an interference pattern.

Do the particles make a particle or wave pattern when going through two slits?

The particles make a wave pattern when going through two slits.

Which best explains how the diffraction pattern observed in Young's experiment supports the wave theory of light? The pattern was caused by light moving in a straight path. The pattern was caused by light being separated into colors. The pattern was caused by the interference of waves. The pattern was caused by the reflection of waves.

The pattern was caused by the interference of waves.

Snell's Law of refraction

The ratio of the sine of an angle of incidence to the sine of the angle of refraction is a constant

Resonance

The response of a standing wave to another wave of the same frequency

Reflection

The return of a wave back into its original medium

Compared to the velocity of radio waves, the velocity of visible light waves is

The same

Wh does the sun look yellow?

The sky scatters the blue light so the sun looks yellow on Earth.

Period

The time needed for one complete cycle of vibration to pass in a given point Measured in seconds (s) Represented as time (T)

The reason we can read print from any direction is that

The white part of a page reflects light in all directions

What do all electromagnetic waves have in common? They can travel at the speed of light. They have the same wavelengths. They travel only through matter. They have nonmoving magnetic fields.

They can travel at the speed of light.

What do all electromagnetic waves have in common? They can travel at the speed of light. They have the same wavelengths. They travel only through matter. They have nonmoving magnetic fields

They can travel at the speed of light.

The primary source do polar roses sunglasses is

To block glare form reflections

After randomly polarized light passes through a polarizer, it is

Totally polarized

Light Transmission

Translucent - transmits light with distortion Transparent - transmits light without distortion

What do color filters do?

Transmit one or more colors of light but absorb others.

Glass is transparent to visible light, but not to

Ultraviolet and infrared

Causes seismic waves

Usually generated by movements of the Earth's tectonic plates but may also be caused by explosions, volcanoes and landslides

What is the ultimate source of electromagnetic waves?

Vibrating charged particles

The source of all electromagnetic waves is

Vibrating charges

Which theory was contradicted by experiments with the photoelectric effect? Light spreads out after it passes through a small opening. As soon as light strikes metal, electrons will be ejected. Visible light, regardless of color, will cause the ejection of electrons when striking metal. The kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Visible light, regardless of color, will cause the ejection of electrons when striking metal.

Wave Y and wave Z are two types of electromagnetic waves traveling through a vacuum. Suppose the frequency of wave Y is about three times greater than the frequency of wave Z. Which best compares the energy transferred by the two waves? It is the same for each wave because the amount of energy transferred is constant in all types of electromagnetic waves. Wave Y transfers about one-third the amount of energy as wave Z because energy and frequency have an inverse relationship. Wave Y transfers about three times the amount of energy as wave Z because energy and frequency have a direct relationship. It is zero for each wave because when waves travel through a vacuum, they do not transfer energy.

Wave Y transfers about three times the amount of energy as wave Z because energy and frequency have a direct relationship.

The main difference between a radio wan e and a light wave is it's

Wavelength

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum? Wavelength and frequency decrease. Wavelength and frequency increase. Wavelength increases, and frequency decreases. Wavelength decreases, and frequency increases.

Wavelength increases, and frequency decreases.

Seismic waves

Waves of energy that travel through the Earth

Which describes the results of the double slit experiment? Check all that apply. Waves produced a diffraction pattern. Results supported the wave theory of light. Results demonstrated the relationship between electric and magnetic fields. Beams of light separated as they passed through a prism. Results supported the particle theory of light.

Waves produced a diffraction pattern. Results supported the wave theory of light.

Mechanical waves

Waves that require a medium through which to travel

magenta, yellow, and cyan

What are the complementary colors of light?

red, green, and blue

What are the primary colors of light?

yellow

What is the complementary color of blue light?

magenta

What is the complementary color of green light?

cyan

What is the complementary color of red light?

Two types of reflection

When light falls on a smooth surface it is called a *regular* or *specular* reflection; for example, a mirror When light falls on a rough surface it is called an *irregular* or *diffuse* reflection; for example, a person

Total internal reflection

When the angle of incidence is greater than the critical angle

The primary job of a(n) ______ is to increase the power of a modified radio wave.

amplifier

This image shows a stream of positively charged particles being directed at gold foil. The positively charged particles are called "alpha particles" and each one is like a nucleus without any electrons. What is the best explanation for why a particle is striking point X? Alpha particles are mostly empty space, so they move in random directions, and one of these alpha particles can strike point X. The gold atoms contain negative electrons, so when alpha particles strike the gold they keep moving but in various directions. If an alpha particle hits the gold foil, a gold nucleus splits and a particle from it flies out at point X. When the dense, positive alpha particle passes close to a positive nucleus of gold, the alpha particle repels and hits the screen at point X.

When the dense, positive alpha particle passes close to a positive nucleus of gold, the alpha particle repels and hits the screen at point X.

When is white light observed or produced?

When the light of all of the wavelengths strike the retina.

What does it mean to have an interference pattern?

When the top of one wave meets the bottom of another wave and they cancel each other out. Interference patterns have many waves. The highest intensity are the bright lines and where they cancel each other out there is nothing.

Snell's Law

When travelling from air into a substance, the ratio of sine of the angle of incidence to the sine of the angle of refraction is equal to the index of refraction of the new medium

Complementary Colors

When two colors are added together and produce white they are complimentary (every color has a complimentary color)

Constructive interference

When waves add up to make a larger amplitude

Destructive interference

When waves add up to make a smaller, or zero, amplitude

cyan

White - red = ?

What does adding a primary color with the secondary color give you?

White light

all

White light is observed when light of _____ wavelengths strike the retina.

A ray diagram is shown. Which letter represents the location of the image produced by the lens? W X Y Z

Which go there electromagnetic waves had the shortest wavelength?

X-rays

Which two electromagnetic waves are useful for diagnosing illnesses? X-rays and radio waves microwaves and gamma rays gamma rays and visible light radio waves and ultraviolet waves

X-rays and radio waves

Kayla drew a diagram to compare convex and concave lenses. Which labels belong in the areas marked X, Y, and Z? X: Causes light rays to bend away from the principal axis Y: Is capable of producing images that are smaller than objects Z: Causes light rays to bend toward the principal axis X: Causes light rays to bend toward the principal axis Y: Is capable of producing images that are smaller than objects Z: Causes light rays to bend away from the principal axis X: Causes light rays to bend toward the principal axis Y: Is capable of producing images that are larger than objects Z: Causes light rays to bend away from the principal axis X: Causes light rays to bend away from the principal axis Y: Is capable of producing images that are larger than objects Z: Causes light rays to bend toward the principal axis

X: Causes light rays to bend toward the principal axis Y: Is capable of producing images that are smaller than objects Z: Causes light rays to bend away from the principal axis

Felix made a chart listing the uses for two types of mirrors. Which headings belong in the chart? X: Plane Y: Convex X: Concave Y: Plane X: Convex Y: Concave X: Convex Y: Plane

X: Convex Y: Concave

Huan made a chart to study for an exam about radio waves. Which headings best complete the chart? X: Phase Y: Pulse X: Pulse Y: Phase X: AM Y: FM X: FM Y: AM

X: FM Y: AM

Serena draws a diagram to compare what happens when rays hit a boundary and are either reflected or refracted. Which labels belong in the areas marked X, Y, and Z? X: ray bounces off a boundary and maintains constant speed Y: ray changes direction Z: ray passes through a boundary and changes speed X: ray bounces off a boundary and changes speed Y: ray changes direction Z: ray passes through a boundary and maintains constant speed X: ray bounces off a boundary and changes direction Y: ray maintains constant speed Z: ray passes through a boundary and does not change direction X: ray bounces off a boundary and does not change direction Y: ray maintains constant speed Z: ray passes through a boundary and changes direction

X: ray bounces off a boundary and maintains constant speed Y: ray changes direction Z: ray passes through a boundary and changes speed

he diagram shows a spherical wave. Which letter represents a wavelet? W X Y Z

Y the thing that looks like a half circle

The diagram shows changing wavelengths along the electromagnetic spectrum. Which labels belong in the areas marked Y and Z? Y: Ultraviolet Z: Radio Y: Gamma rays Z: Visible light Y: X-rays Z: Infrared Y: Radio Z: Gamma rays

Y: Radio Z: Gamma rays

What would happen if the primary colors were not equal?

You get a variation of the color.

If 2 polarizing filters are held with their polarization do axes at right angles to each other, the amount of light transmitted compared to when their axes are parallel is

Zero

It is difficult to see the roadway from a car on a rainy night because the road surface that is normally a diffuse reflector wen dry becomes

a mirror surface when wet

It is difficult to see the roadway from a car on a rainy night because the road surface that is normally a diffuse reflector when dry becomes

a mirror surface when wet

What is the smallest packet of electromagnetic energy that can be absorbed or emitted? a proton an electron a quantum a wave

a quantum

What is the smallest packet of electromagnetic energy that can be absorbed or emitted? a proton an electron a quantum a wave

a quantum

Which is a tool used by scientists to determine the composition of objects? a hologram a spectrometer a wave front a prism

a spectrometer

filter

a transparent material that selectively transmits light.

What type of spectrum is shown below? absorption electromagnetic emission infrared light

absorption (rainbow with black lines)

As part of the photoelectric effect, which of these is responsible for the pixels in an image on a digital camera? accumulated electrons that are absorbed by the image sensor accumulated electrons that are ejected by the image sensor accumulated photons that are ejected by the image sensor accumulated photons that are absorbed by the image sensor

accumulated electrons that are ejected by the image sensor

A beam of light travels faster in

air

A beam of light travels faster in air or water

air

The chart shows the speed at which light travels through different media. In which medium would light have the longest wavelength? water air glass diamond

air

What is white light made up of?

all colors or primary colors

A beam of light emerges from water into air at an angle. The beam is bent

away from the normal

What color would a blue bowl with a red filter look like?

black

magenta + yellow + cyan =

black

Electromagnetic waves

can travel through a vacuum

The diagram shows a device that uses radio waves. What is the role of the part in the diagram labeled Y? modulate, amplify, and send out waves capture, amplify, and demodulate waves change the amplitude and frequency of waves change the pulse and phase of waves

capture, amplify, and demodulate waves

Which two technologies use the same range of radio wave frequencies? television broadcasting and AM radio broadcasting cell phones and space communication CB radios and submarine communication AM and FM radio broadcasting

cell phones and space communication

What does color depend on in the atmosphere?

chemicals in the atmosphere

the spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the light's

color

Barbara places an object in front of a mirror. The mirror produces an image that is inverted, real, and smaller than the object. Which kind(s) of mirror could Barbara be using? convex, because concave and plane mirrors produce only virtual images concave, because plane and convex mirrors produce only upright virtual images concave or convex, because both types of mirrors produce images that are inverted and real convex or plane, because both types of mirrors produce an image that is smaller than the object

concave, because plane and convex mirrors produce only upright virtual images

What cells in our eyes enable us to see color?

cones

Thin Film Interference

constructive and destructive interference of light waves can occur within thin films (creating waves of nodes and anti-nodes)

The diagram shows monochromatic light passing through two openings. What do the areas labeled X, Y, and Z represent? constructive interference in which waves cancel each other out constructive interference in which waves strengthen each other destructive interference in which waves cancel each other out destructive interference in which waves strengthen each other

constructive interference in which waves strengthen each other

A converging lens

converges parallel rays of light, refracts parallel rays of light, is thicker in the center than at the edges, bends parallel rays of light so they cross at a single point

A magnifying glass is a ___ lens

converging lens

blue + green =

cyan

green + blue =

cyan

white - red =

cyan

Which is the constructive interference formula for diffraction grating problems?

d sin (theta) = (n) lambda

Which is the destructive interference formula for diffraction grating problems?

d sin (theta) = (n+0.5) lambda

Refraction is caused by

different wave speeds

The fuzzy edges of shadows are a result of ______.

diffraction

Which phenomena support only the wave theory of light? Check all that apply. reflection refraction diffraction interference photoelectric effect

diffraction interference

When light hits a rough surface and is reflected, it is called reflection.

diffuse

J.J. Thompson is credited with discovering the proton. electron. neutron. nucleus.

electron

Changes in the appearance of emission and absorption spectrums are caused by the activities of protons. electrons. neutrons. neutrinos.

electrons

The photoelectric effect occurs when ______ are emitted from metal when the metal is struck by light of certain frequencies.

electrons

The law of reflection states that the angle of incidence and the angle of reflection are always

equal in measure

The law of reflection states that the angle of incidence and the angle of reflection are always _______.

equal in measure

Which is the correct formula for finding the frequency of an electromagnetic wave?

f=c/lambda

If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes

for light to travel from the sun to earth

The bright light emission spectrums below are seen through a spectroscope. The unknown sample is a mixture of the observed gases. Which gases are found in the unknown sample? gases W and Z gases X and Y gases W and Y gases Z and Y

gases Z and Y

as the frequency of the radiation goes up what happens to its energy?

goes up

white - magenta =

green

cyan

green + blue = ?

white

green + magenta = ?

yellow

green + red = ?

color subtraction

identifying which complementary colors of light are subtracted (absorbed) and which are reflected from the original set

What is used to generate interference patterns in order to produce a hologram? shadows spectrometers lasers prisms

lasers

The diagram shows how an image is produced by a plane mirror. Which letter shows where the image will be produced? W X Y Z

image of a beach ball it will be in the same spot so X

Real Image

image produced by a converging lens or curved convex mirror

When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens the planes shadow is

in the center of the rainbow.

When light emerges from water to air, the average light speed

increases

Remote controls rely on ______ waves to carry signals and transmit information over short distances.

infrared

In a curved optical fiber, light

internally reflects in a succession of straight-line paths

A ray diagram without the produced image is shown. Which describes the image produced by the lens? upright and real inverted and real smaller than the object and upright smaller than the object and inverted

inverted and real

An echo occurs when sound

is reflected from a distant surface

As the frequency of electromagnetic waves increases, what happens to the wavelength? It increases. It decreases. It fluctuates. It remains constant.

it decreases

A ray diagram shows an object placed between 2F and F of a convex lens. The image produced is smaller than the object. upright. larger than the object. virtual.

larger than the object

A ray diagram shows an object placed between 2F and F of a convex lens. The image produced is smaller than the object. upright. larger than the object. virtual.

larger than the object.

When using the magnification equation, a value greater than 1 as the solution for M indicates that the image is larger than the object. smaller than the object. real. virtual.

larger than the object.

When using the magnification equation, a value greater than 1 as the solution for M indicates that the image is larger than the object. smaller than the object. real. virtual.

larger than the object.

What do we see?

light reflected to our eyes

Principal Axis

line joining the centers of curvature of surfaces

Normal

line perpendicular to the surface where reflection is taking place

compared to the wavelength of ultra violet waves, the wavelength of infrared waves is

longer

red + blue =

magenta

white - green =

magenta

subtractive primary colors

magenta, yellow, cyan

A cell phone company relies on which kind of waves in order to provide service for its customers? ultraviolet waves infrared waves gamma rays microwaves

microwaves

The process of changing a property of a wave to transmit information is called ______.

modulation

Which formula represents Snell's law?

n1 sin (theta 1)= n2 sin (theta 2)

Which excited electron has the lowest energy?

n=1

What is black light the same as?

no color because it is the complete absorption of visible light

Light does not pass through what kind of materials

opaque

Do electrons make a particle or wave pattern when going through one slit?

particle pattern

Which image best illustrates diffraction?

picture of light spreading through the clouds

The surface of a _____ mirror is flat.

plane

Focal Plane

plane perpendicular to the principal axis that passes through the focal point or the lense

Focal Point

point at which a beam of light parallel to the principle axis converges

A process that modifies light waves so they vibrate in a single plane is referred to as _______

polarization

Which type of modulation is used by remote-control toys? amplitude frequency phase pulse

pulse

Heinrich Hertz used properties of which type of wave to support the idea that light is also made of waves? infrared gamma microwave radio

radio

Heinrich Hertz used properties of which type of wave to support the idea that light is also made of waves? infrared gamma microwave radio

radio

In 2010, scientists obtained an image of an asteroid that was dangerously close to Earth. Which technology did the scientists likely use to capture the image? GPS, because it uses satellites that provide position and velocity data radio telescope, because it captures radio waves from space MRI, because it uses magnets to produce a picture submarine communication, because it uses LF radio waves

radio telescope, because it captures radio waves from space

Which of the following is a consequence of the refraction of light

rainbows, mirages, internal reflection light bends

additive primary colors

red, blue, green

Which three cones combine to produce white light?

red, green and blue

What are the three types of cones?

red, green, blue

primary colors

red, yellow, blue

A person standing waist-deep in a swimming pool appears to have short legs because of light

refraction

A rainbow nicely illustrates an example of light

refraction and internal reflection

Electromagnetic waves with higher frequencies have wave lengths that are

shorter

smaller and upright

Which technology uses low frequency (LF) radio waves? space communication FM radio broadcasting TV program broadcasting submarine communication

submarine communication

The law of reflection says

the angle of reflection from a mirror equals the angle of incidence

Which phenomena support only the particle theory of light? Check all that apply.

traveling in a straight path photoelectric effect

Spherical Abberation

the fact that a spherical mirror does not bring all rays parallel to the principal axis to a single image point after reflection due to curvature

The shiny surfaces of metals have most to do with

the free electrons in metal atoms

In diffraction, the smaller the gap...

the greater the waves are spread (bent)

When a virtual image is created in a plane mirror

the image is up right and located beyond the the mirror, reflected rays diverge

Chromatic Abberation

the rainbow effect when light is dispersed through lens caused by refraction of different colors at different rates

Compared to the velocity of of radio waves, the velocity of visible light waves is

the same

In diffraction, the greater the gap...

the smaller the waves are spread (bent)

Converging lense

thicker in the middle

Ray

thin beam of light

Diverging Lense

thinner in the middle

the primary purpose of polarized sunglasses is

to block glare from reflections

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receive modify and amplify amplify and receive modify and transmit

transmit and receive

Electromagnetic waves are

transverse waves

Which phenomena support only the particle theory of light? Check all that apply. reflection bending around objects traveling in a straight path interference photoelectric effect

traveling in a straight path photoelectric effect

A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most useful for this task? infrared radio ultraviolet microwave

ultraviolet

A ray diagram shows an object placed in front of a concave lens beyond 2F. Which are characteristics of the image that is produced? real and inverted virtual and inverted upright and larger than the object upright and smaller than the object

upright and smaller than the object

A ray diagram shows that an object is placed between the focal point and the vertex of a convex mirror. What are the characteristics of the image produced by the object? inverted, smaller than object, real upright, smaller than object, virtual inverted, larger than object, real upright, larger than object, virtual

upright, smaller than object, virtual

The image you eye revives is

upside down

Wave equation (normal)

v= fλ v= velocity (m/s) f= frequency (Hz) or (s^-1) λ= wavelenght (m)

Wave equation (with period)

v= λ/T v= velocity (m/s) λ= wavelenght (m) T= period (s)

When using the lens equation, a negative value as the solution for di indicates that the image is real. virtual. upright. inverted.

virtual

Which lists the waves in order of frequency, from highest to lowest? X-rays, gamma rays, ultraviolet radio waves, visible light, X-rays ultraviolet, microwaves, gamma rays visible light, infrared, microwaves

visible light, infrared, microwaves

The main difference between a radio wave and a light wave it its

wavelength and frequency

What do materials absorb?

wavelengths of light

blue + yellow =

white

green + magenta

white

red + cyan =

white

red + green + blue =

white

yellow

white - blue = ?

red

white - cyan = ?

red

white - green - blue = ?

magenta

white - green = ?

nothing

white - magenta - green = ?

green

white - magenta = ?

nothing

white - red - cyan = ?

blue

white - yellow = ?

What happens when you add a primary color with a secondary color?

white light

A paper that absorbs blue light will appear what color to the human eye?

yellow

red + green =

yellow

white - blue =

yellow

green cones see

yellow and green wavelengths

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