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Unit 3: Waves and Light Unit Review

Total questions: 28

Worksheet time: 28mins

Name
Class
Date
1.

Why does a leaf look green in the summer?

a)

The leaf uses green light to make food in its cells.

b)

The leaf absorbs green light.

c)

The leaf reflects green light and absorbs other colors of sunlight.

d)

The leaf produces green light in its cells.

2.

A class made a solar cooker out of a large can. What color should they paint the can in order to collect the most heat?

a)

white

b)

black

c)

green

d)

pink

3.

How does the color of an object affect the amount of energy it receives from sunlight?

a)

Light colored objects reflect more light and become warmer than darker objects.

b)

Light colored objects absorb more light and become warmer than darker objects.

c)

Dark colored objects reflect more light and become warmer than lighter objects.

d)

Dark colored objects absorb more light and become warmer than lighter objects.

4.

What causes the blue color of the sky?

a)

reflection of light from land and water surfaces

b)

absorption of light by matter in the atmosphere

c)

emission of light by land and water surfaces

d)

scattering of light by matter in the atmosphere

5.

What type of energy is transmitted from the Sun to Earth through space?

a)

electromagnetic energy

b)

electrical energy

c)

kinetic energy

d)

heat energy

6.

Why can you see someone clearly through a clear glass window but not through a frosted glass window?

a)

Clear glass transmits some light, but frosted glass absorbs all light.

b)

Clear glass reflects light, but frosted glass absorbs light.

c)

Clear glass scatters some light, but frosted glass transmits all light.

d)

Clear glass transmits light, but frosted glass scatters light.

7.

Which numbered area on the electromagnetic spectrum shown below contains visible light?



a)

1

b)

2

c)

3

d)

4

8.

This illustration shows three different waves traveling through the same medium. How do the waves differ from one another?

a)

The waves have different wavelengths.

b)

The waves carry different amounts of energy.

c)

The waves are a different distance from the source.

d)

The waves travel at different speeds.

9.

Look at this illustration of a wave.

Which points on the wave are the trough and the crest?

a)

Point W is a trough; Point Z is a crest.

b)

Point Y is a trough; Point X is a crest.

c)

Point Y is a trough; Point W is a crest.

d)

Point W is a trough; Point Y is a crest.

10.

The illustration shows a transverse wave.

Which bar measures the wavelength of the wave?

a)

bar W

b)

bar X

c)

bar Y

d)

bar Z

11.

Visible light is which type of wave?

a)

mechanical

b)

longitudinal

c)

electromagnetic

d)

seismic

12.

Which of the following is utilized by the eye to detect the three primary colors of light (red, blue, and green) to form images in color?

a)

cornea

b)

pupil

c)

lens

d)

retina

13.

Which of the following is utilized by the eye to refract light, adjusting sight for both near and far objects?

a)

cornea

b)

pupil

c)

lens

d)

retina

14.

Wave energy which travels parallel to the disturbance in compression is known as a

a)

transverse wave

b)

longitudinal wave

c)

electromagnetic wave

d)

ocean wave

15.

Juan lays an object on a table in a well-lighted room. The object absorbs all visible light waves. What color object does Juan see?

a)

red

b)

white

c)

black

d)

violet

16.

When discussing the motion of waves, how is a medium defined?

a)

a substance that creates a wave

b)

a substance that damages a wave

c)

a substance that blocks a wave’s movement

d)

a substance that a wave moves through

17.

This is a wave pattern diagram for two transverse waves.

How do the waves compare?

a)

Wave 1 has a longer wavelength than Wave 2.

b)

Wave 1 has a higher frequency than Wave 2.

c)

Both waves have the same frequency.

d)

Both waves have the same wavelength.

18.

How does light travel?

a)

in a curved line

b)

through stored energy

c)

in transverse waves

d)

in longitudinal waves

19.

What do waves carry through objects?

a)

energy

b)

water

c)

light

d)

sound

20.

This illustration shows three different waves traveling through the same medium. How do the waves differ from one another?

a)

The waves are a different distance from the source.

b)

The waves carry different amounts of energy.

c)

The waves have different wavelengths.

d)

The waves travel at different speeds.

21.

A student looks at a mirror and then at a piece of shiny aluminum foil. Why is the image in the mirror clearer than the one in the aluminum foil?

a)

The mirror absorbs more light than the aluminum foil.

b)

The aluminum foil produces more light than the mirror.

c)

The mirror reflects more light without scattering the light.

d)

The aluminum foil reflects more light without scattering the light.

22.

What property of light allows humans to detect differences in color?

a)

the speed at which the light wave travels to the eye

b)

the distance the light wave travels from the source to the eye

c)

the wavelength of the light the eye receives

d)

the intensity of light the eye receives

23.

What term describes the behavior of light as it strikes and then bounces away from a surface?

a)

absorption

b)

diffraction

c)

reflection

d)

refraction

24.

Which is the correct sequence of events that allows human eyes to see green grass?

a)

Light is produced. All light waves reflect off the grass. The human eye sees the image as green grass.

b)

Light is produced. Green light waves reflect off the grass. The human eye sees the image as green grass.

c)

Light is produced. All light waves are absorbed into the grass. The human eye sees the image as green grass.

d)

Light is produced. Green light waves are absorbed into the grass. The human eye sees the image as green grass.

25.

Which statement best describes the relationship between the frequency and the wavelength of waves?

a)

As wavelength decreases, frequency remains the same.

b)

As wavelength changes, there is no change in frequency.

c)

As frequency increases, wavelength gets longer.

d)

As frequency increases, wavelength gets shorter.

26.

Which statement best describes visible light?

a)

The human eye can only detect visible light as white light.

b)

The frequency of visible light is the same as the frequency of gamma rays.

c)

Visible light can only be seen with special equipment or technology.

d)

Visible light makes up a small part of the electromagnetic spectrum.

27.

The picture below shows a person holding a wire spring.

How would the wave change if the person’s hand moved at a slower rate?

a)

The frequency would decrease.

b)

The frequency would increase.

c)

The amplitude would decrease.

d)

The amplitude would increase.

28.

How do you feel about the upcoming test?

a)

I am going to ace the test!

b)

I need to study a bit more, but I think I will do okay on the test.

c)

I have a LOT of studying to do!!

d)

What?!? There's going to be a test?!?