Properties of Light

The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct? X-rays have lower energy than gamma rays because X-rays have higher frequencies. X-rays have lower energy than gamma rays because X-rays have shorter wavelengths. Visible light has higher energy than infrared light because visible light has longer wavelengths. Visible light has higher energy than infrared light because visible light has higher frequencies.

Visible light has higher energy than infrared light because visible light has higher frequencies.

Sayid listed some characteristics of waves in a chart. Part of his chart is shown. Which of these would correct Sayid's error? Change the heading of the chart to "Mechanical." Replace "travel in straight lines" with "move in curved paths." Add "move due to particles bumping into each other" to the chart. Change "move only through matter" to "move through space and matter."

Change "move only through matter" to "move through space and matter."

The diagram shows the field lines near the poles, X and Y, of two magnets. Based on the field lines, what are the poles of the magnets? X: north, Y: south X: south, Y: north X: north , Y: north X: south , Y: south

X: north , Y: north

Which object absorbs the most visible light? a clear bowl a white rock a black t-shirt a red apple

a black t-shirt

Which objects are opaque? Check all that apply. textbook track shoes light bulb basketball lampshade

textbook track shoes basketball

What theory was Huygens writing about? the particle theory of light the reflection of light off objects the way objects refract light the wave theory of light

the wave theory of light

A bar magnet is cut in half, as shown. Which shows the pieces after the magnet is cut?

1st one

What characteristic do all parts of the electromagnetic spectrum share? They have the same wavelength. They have the same frequency. They interact in the same way with any matter. They travel at the same speed through empty space.

They travel at the same speed through empty space.

Which are characteristics of light? Check all that apply. can be bent by objects can be taken in by objects can be stopped by objects can bounce off objects can be changed by objects

can be bent by objects can be taken in by objects can bounce off objects

Which element is magnetic? calcium chromium carbon cobalt

cobalt

Mateo drew the field lines around the ends of two bar magnets but forgot to label the direction of the lines with arrows. In which direction should an arrow at position 1 point? left right up down

left

Prisms separate ________light, such as that from the Sun, by wavelength.

white

Which statement best explains a difference between the interaction of light with clear glass and the interaction of light with silver metal? Light slows down when it interacts with glass but not when it interacts with metal. Light slows down when it interacts with metal but not when it interacts with glass. Most of the light passes through glass but none of the light passes through metal. Most of the light is absorbed by glass but none of the light is absorbed by metal.

Most of the light passes through glass but none of the light passes through metal.

In an illustration, lines of force are drawn around a magnet to illustrate the magnetic __________.

field

Which example best illustrates that light behaves like particles? Light bends as it strikes a window. Light bounces off a white cement sidewalk. Light travels in space at a speed of about 3.0 x 108 m/s. Light increases in speed as it moves through matter.

Light bounces off a white cement sidewalk.

Zaccharias Janssen was a scientist who studied properties of light and invented one of the first compound microscopes in the late 1500s. Which property did Janssen most likelybelieve about light during the time of his invention? Light bends around objects. Light bounces off surfaces. Light travels in a curved path. Light is made up of waves.

Light bounces off surfaces.

Which statement describes a property of magnets? Magnets repel objects that are made of iron. Magnets attract sheets of paper. Magnets attract or repel iron nails. Magnets attract or repel other magnets.

Magnets attract or repel other magnets.

After the 1600s, how did observations of light being refracted change the way most scientists thought about light? They no longer believed that light acted as waves. They began to believe that light acted as waves. They no longer believed that light acted as particles. They began to believe that light acted as particles.

They began to believe that light acted as waves.

If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime? Ultraviolet light detects the presence of radioactive substances. Ultraviolet light shows cold areas as blue and warm areas as red. Ultraviolet light causes substances to fluoresce and give off visible light. Ultraviolet light transmits information to AM and FM radio receivers.

Ultraviolet light causes substances to fluoresce and give off visible light.

A museum sets up a display of fluorescent minerals. Which best describes how electromagnetic waves can be used to enhance the display? Infrared light shining on the minerals will cause them to give off visible light. Visible light shining on the minerals will cause them to give off infrared light. Ultraviolet light shining on the minerals will cause them to give off visible light. Visible light shining on the minerals will cause them to give off ultraviolet light.

Ultraviolet light shining on the minerals will cause them to give off visible light.

Gino made a table to describe parts of the electromagnetic spectrum. What mistake did Gino make? X-rays should have a low frequency and a long wavelength. Infrared light should have a high frequency, not a low frequency. Radio waves should have a very high frequency and a very short wavelength. Ultraviolet light should have a short wavelength, not a long wavelength.

Ultraviolet light should have a short wavelength, not a long wavelength.

A veterinarian thinks that a dog has swallowed a key ring. Which types of electromagnetic waves is the doctor most likely to use to check the dog? gamma rays microwaves radio waves X-rays

X-rays

Juan created a chart to help him study for a test. Which headings best complete the chart? X: Transparent Objects, Y: Opaque Objects X: Opaque Objects, Y: Transparent Objects X: High Frequency Waves, Y: Low Frequency Waves X: Low Frequency Waves, Y: High Frequency Waves

X: Opaque Objects, Y: Transparent Objects

A bar magnet and a second object are hung from metal rods. The diagram below shows what happens when both objects are released. Which best describes the object on the right? an iron bar a steel bar a bar magnet with its north pole on the left a bar magnet with its south pole on the left

a bar magnet with its south pole on the left

Which of these will reflect light with the highest frequency? an orange basketball a blue candle a green ribbon a yellow banana

a blue candle

Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have a lower frequency and a shorter wavelength. a higher frequency and a longer wavelength. a lower frequency and a longer wavelength. a higher frequency and a shorter wavelength.

a lower frequency and a longer wavelength.

Which object is least likely to allow light to pass through it? a pair of eyeglasses a clear water bottle a car windshield a tree trunk

a tree trunk

The diagram shows light interacting with an object. Which object is the light most likely striking? a window a mirror a plaster wall a steel beam

a window

Jolie builds a model of a maglev train. She uses disc magnets to levitate the train. A disc magnet has its north and south poles on its faces, as shown. What is the best way to arrange the magnets on the train and on the track so that the model train levitates? flat, so that the north pole of each magnet on the train points up and the north pole of each magnet on the track points up flat, so that the north pole of the magnets on the train point up and the north poles of the magnets on the track point down on edge, so that the north poles of the magnets on the train point to the front and the north poles of the magnets on the track point toward the rear on edge, so that the north pole of each magnet on the train and on the track point toward the rear of the train

flat, so that the north pole of the magnets on the train point up and the north poles of the magnets on the track point down

Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own food. Under which color of light will plants be least likely to make food? red blue orange green

green

A pet lizard and its shelter must be kept warm. What type of electromagnetic waves would most likely be used? gamma rays infrared light ultraviolet light microwaves

infrared light

Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects? X-rays radio waves infrared light visible light

infrared light

Quentin made a table to summarize uses of electromagnetic waves. Which should he write in the "Use" section for X-rays? music broadcasts luggage inspections night-vision goggles digital photographs

luggage inspections

Which part of the electromagnetic spectrum is nearest to radio waves? X-rays microwaves gamma rays ultraviolet light

microwaves

An object that is made of which material is likely to be attracted to a magnet? nitrogen nickel paper plastic

nickel

Fill in the blanks to complete the sentence. Light acts like a ________when it bounces off surfaces, and acts like a _______when it bends around objects.

particle wave

Isaac Newton believed that light was made of _________.

particles

The ends of a magnet where the forces are the strongest are called magnetic _________.

poles

The part of the electromagnetic spectrum that has the longest wavelengths is________.

radio waves

Which types of electromagnetic waves have longer wavelengths than the waves that make up visible light? Check all that apply. radio waves gamma rays microwaves infrared light ultraviolet light X-rays

radio waves microwaves infrared light

Complete the sentence. The color of an opaque object is determined by the colors of light that it__________.

reflects

When light bends around an object, the light is___________.

refracted

Lisa sees the image below as she researches the behavior of light. Which behavior is the spoon in the top image most likely being used to illustrate? refraction absorption reflection bounce

refraction

Joe follows the procedure below to make a compass. 1. Move a magnet from the top of a needle to its point fifty times. 2. Lay the needle on a cork that is floating in a bowl of water. 3. Observe the direction that the needle points. What is the purpose of step 1? to give the needle an electric charge to make the needle sharper to magnetize the needle to flatten the side of the needle

to magnetize the needle

Use the drop-down menus the complete the statements about the image. The windowpanes are _________. The colors of the panes are due to the wavelengths of light that the glass ___________.

transparent allows to pass through

Which are characteristics of electromagnetic waves? Check all that apply. travel in straight lines and can bounce off surfaces travel through space at the speed of light travel only through matter travel only through space can bend around objects move by particles bumping into each other move by the interaction between an electric field and a magnetic field

travel in straight lines and can bounce off surfaces travel through space at the speed of light can bend around objects move by the interaction between an electric field and a magnetic field

The part of the electromagnetic spectrum that is necessary for the sense of sight in humans is ___________.

visible light

What is the distance from the peak of one wave to the peak of the next wave called? wavelength crest trough amplitude

wavelength

According to Dutch scientist Christiaan Huygens, what was light made of? atoms particles waves electrons

waves

When all the colors of light are mixed, what is the resulting color? blue red white black

white

Two bar magnets are hung from metal rods and held in the position shown below. The magnets are released and swing freely. Which diagram best predicts their final position?

3rd one

Which statements correctly describe Earth's magnetic field? Check all that apply. Field lines enter Earth near the North Pole. The magnetic pole near Antarctica is a north pole. Compasses point toward a magnetic pole that is a north pole. Field lines circle Earth from east to west. A compass can lead a hiker to the geographic North Pole.

Field lines enter Earth near the North Pole. The magnetic pole near Antarctica is a north pole.

Kamala made a table to describe parts of the electromagnetic spectrum. What mistake did Kamala make? Gamma rays should have a very high frequency, not a very low frequency. Visible light should have a low frequency and a long wavelength. Infrared light should have a short wavelength, not a long wavelength. Microwaves should have a high frequency and a short wavelength.

Gamma rays should have a very high frequency, not a very low frequency.

Why does green light slow down more than orange light does when passing through an object? Green light has longer wavelengths than orange light. Green light has fewer particles than orange light. Green light refracts less than orange light. Green light has a higher frequency than orange light.

Green light has a higher frequency than orange light.

How can electromagnetic waves be used to fight a forest fire? Gamma ray images can show hot spots as radioactive areas. Ultraviolet images can show hot spots as fluorescent areas. X-ray images can show hot spots as white areas. Infrared images can show hot spots as red areas.

Infrared images can show hot spots as red areas.

Someone places a chocolate bar near a working radar set that is used to locate ships and airplanes. Which best describes what is likely to happen to the chocolate bar? It changes color as it absorbs visible light from the radar set. It softens and melts as it absorbs microwaves from the radar set. It becomes radioactive after it absorbs gamma rays from the radar set. It begins to fluoresce after it absorbs ultraviolet light from the radar set.

It softens and melts as it absorbs microwaves from the radar set.

Laticia draws the diagram below to show Earth's magnetic field. What error did Laticia make? The dashed line should be drawn in the same place as the solid line. The solid line should be drawn in the same place as the dashed line. The arrows to the left of Earth should point down. The arrows to the right of Earth should point up.

The arrows to the right of Earth should point up.

Which describes the changes in visible light moving from red to violet? The energy increases. The speed decreases. The wavelength increases. The frequency decreases.

The energy increases.

Which best describes Earth's magnetic field lines? The field lines go out of Earth near Antarctica, enter Earth in northern Canada, and are aligned with the geographic poles. The field lines go out of Earth near Antarctica, enter Earth in northern Canada, and are not aligned with the geographic poles. The field lines go out of Earth in northern Canada, enter Earth near Antarctica, and are aligned with the geographic poles. The field lines go out of Earth in northern Canada, enter Earth near Antarctica, and are not aligned with the geographic poles.

The field lines go out of Earth near Antarctica, enter Earth in northern Canada, and are not aligned with the geographic poles.

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? gamma rays visible light infrared light microwaves

gamma rays

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? Check all that apply. radio waves infrared light microwaves gamma rays visible light X-rays

gamma rays X-rays

Based on the image, which color will refract the most when passing through a prism? orange yellow green

green

Mr. Garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel is __________.

iron

Which statement correctly compares the speed of light? The speed of light through space is much greater than 3 x 108 m/s. The speed of light in glass is much greater than 3 x 108 m/s. The speed of light in glass is faster than the speed of light through space. The speed of light in glass is slower than the speed of light through space.

The speed of light in glass is slower than the speed of light through space.

Which are characteristics of the speed of light? Check all that apply. The speed of light is the speed all waves travel. The speed of light is the speed electromagnetic waves travel. The speed of light is 3.0 x 108 m/s in space. The speed of light is the same in all matter. The speed of higher frequency light slows down more than lower frequency light in matter.

The speed of light is the speed electromagnetic waves travel. The speed of light is 3.0 x 108 m/s in space. The speed of higher frequency light slows down more than lower frequency light in matter.

Carla did an experiment by placing a piece of smooth, clear glass and a piece of smooth, black stone under a lamp for twenty minutes. Which prediction will most likely be supported by Carla's experimental results? The glass will feel warmer than the stone after twenty minutes. The stone will feel warmer than the glass after twenty minutes. The glass will reflect all of the light after twenty minutes. The stone will reflect all of the light after twenty minutes.

The stone will feel warmer than the glass after twenty minutes.

Use the image to rank the colors from the color that will refract the least to the color that will refract the most. Least Most

Red Yellow Green Blue Violet

How are the magnetic field lines near the south pole of a magnet affected when a second south pole is brought near it? The field lines combine with the lines around the second south pole. The field lines overlap with the lines from the second south pole. The field lines bend toward the second south pole. The field lines bend away from the second south pole.

The field lines bend away from the second south pole.

Which statements about Earth's core help explain Earth's magnetic field? Check all that apply. Earth's core is composed of magnets. The inner core is solid. The outer core is solid. The inner core is liquid and moving. The outer core is liquid and moving. Earth's core is composed of iron and nickel.

The inner core is solid. The outer core is liquid and moving. Earth's core is composed of iron and nickel.

What happens when light from the Sun passes through any type of matter? The light slows down. The light speeds up. Most of the light is absorbed. Most of the light is reflected.

The light slows down.

A compass taken to Earth's moon does not point in a specific direction on the moon. What is the most likely reason for the difference between how the compass works on Earth and on the moon? The moon lacks an atmosphere. The moon contains no rocks that have iron. The moon does not have a liquid core. The moon has no bodies of water.

The moon does not have a liquid core.

Jill uses a magnet to pick up a nail. Then, she touches the nail to a paper clip and picks up the paper clip. What will most likely happen when she pulls the magnet away from the nail? The paper clip will stay attached to the nail because the nail is now a permanent magnet. The paper clip will stay attached to the nail because the paper clip is now a permanent magnet. The paper clip will fall off of the nail because the nail was only a temporary magnet. The paper clip will fall off of the nail because the nail is now magnetized in the opposite direction.

The paper clip will fall off of the nail because the nail was only a temporary magnet.