integrated science b - unit 4: exam

a light wave travels through space at a speed of 3 x 108 m/s. if the wavelength of some light wave is 2 x10-3 m, what is the frequency of the wave?

1.5 x10^11 hz

a sound wave is moving with a frequency of 700 hz. what is the period of this sound wave?

1/700 s

as microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?

2 m

a light ray strikes a plane mirror at an angle of 20 degrees to the normal. what is the angle of the reflected light ray to the normal?

20 degrees

a sound wave with a frequency of 400 hz is moving through a solid object. if the wavelength of the sound wave is 8 m, what is the speed of sound traveling through the solid object?

3200 m/s

sound waves move through some liquid at a speed of 1500 m/s. if the wavelength is 3 m, what is the frequency of the wave?

500 hz

a converging lens can be defined as

XXX a lens that causes parallel light rays to bounce off the surface

two sound waves are moving towards each other. a region of rarefaction overlaps with a region of rarefaction. which of the following choices correctly describes the behavior of sound waves when they overlap as described?

XXX destructive interference; the sound becomes louder because the amplitude increases.

which of these choices most accurately describes how particles move in a transverse wave?

XXX particles in the medium move perpendicular and parallel to the direction of the wave.

study the images. https://cdstools.flipswitch.com/asset/media/549843 https://cdstools.flipswitch.com/asset/media/554808 what type of behavior is modeled by the image?

XXX the image shows two waves overlapping destructively because destructive interference occurs when the same parts of a wave overlap and result in a smaller or larger wave. these waves partially cancel each other.

a beam from a flashlight hits a piece of black coal and a piece of metal located 1 m away. the metal appears shiny compared to the coal. which of the following choices correctly explains how the light interacts with the coal and metal in this situation?

XXX the metal appears shiny because it received more of the light's energy initially, so it is able to reflect a greater amount of light than the coal.

study the image. https://cdstools.flipswitch.com/asset/media/549924 which of the following choices correctly describes the behavior of the light rays when they pass through the lens?

XXX the rays will refract and intersect a point double the distance past the focal point.

study the image of two waves travelling at the same speed through the same medium. https://cdstools.flipswitch.com/asset/media/548900 which of the following choices most accurately compares the amplitudes and wavelengths of the two waves?

XXX the red wave has a greater wavelength because its height is greater than the height of the blue wave. both waves have the same amplitude because the distance between crests is the same. they have different frequencies because the wavelength of each wave is different.

study the image of a wave moving from air to liquid. https://cdstools.flipswitch.com/asset/media/553981 which of the following choices most accurately describes the behavior of the waves when they encounter the liquid?

XXX the speed of the wave decreases when it enters the liquid. the wavelength and frequency remain the same. the wave also changes direction.

study the image. https://cdstools.flipswitch.com/asset/media/549923 due to the position of the penguin, which of the following choices describes the image formed?

XXX virtual, inverted, and larger

a lens that is thinner in the middle and thicker at the ends, and separates light rays that pass through it would be which kind of lens?

a diverging lens

study the two images. a. https://cdstools.flipswitch.com/asset/media/553979 b. https://cdstools.flipswitch.com/asset/media/553980 what types of waves are pictured?

a is a transverse wave and b is a longitudinal wave

refraction occurs when

a wave enters a new medium and changes its speed

a disturbance that moves through a solid, liquid, gas, or a vacuum is defined as

a wave, as long as matter is not being transported

which choice correctly describes a characteristic of an electromagnetic wave?

an electromagnetic wave in a vacuum moves at the speed of light in a vacuum.

study the scenario. a beam of light hits a sheet of metal. if it has enough energy, electrons break free from the metal sheet. which choice correctly describes the behavior of light in this situation?

in this case, light acts like a wave because it requires the total energy of a wave to dislodge the electron. increasing the energy in the light beam releases more electrons and increases the energy carried by each electron.

which choice correctly identifies bands in the electromagnetic spectrum? select all that apply

radio waves microwaves

study the image. https://cdstools.flipswitch.com/asset/media/548907 which type of behavior is depicted in the image?

refraction

a(n) __________ energy wave is transferred through a substance as a series of compressions.

sound

sound waves are traveling through the air. every ½ second, the sound waves pass a detector. which of the following choices correctly describes the period and frequency of these waves?

the period is ½ second, and the frequency is 2 hz.

which of these describes a wave being reflected?

the wave encounters some obstacle or change in medium. the wave bounces off the surface and moves in a different direction, but at an angle equal to the one at which it hit the surface.

study the image. https://cdstools.flipswitch.com/asset/media/548903 which part of the wave are the arrows pointing to?

trough

what type of wave cannot be seen by human beings and causes sunburns?

ultraviolet waves

white light moves through a prism and separates into colors in the following order: red, orange, yellow, green, blue, and violet. which of the following choices correctly describes why the violet ray is at the bottom while the red ray is at the top?

violet light moves slowest through glass while red light moves fastest through glass compared to other visible light. so violet and red refract at different angles.

study the image. https://cdstools.flipswitch.com/asset/media/549918 due to the position of the object, which of the following choices correctly describes the image formed?

virtual, upright, and smaller

light hits a clear plastic bottle and a granite rock. which choice most accurately describes the effect of visible light on the clear plastic and a grey rock?

visible light is absorbed by the rock and the plastic making both objects warmer. some of the light hitting the plastic is reemitted, allowing visible light through the plastic. none of the light hitting the rock is reemitted.