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8th Grade Phys Sci Review 4 - S8P4

Total questions: 160

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

Which has the MOST energy in the electromagnetic spectrum?

a)

gamma

b)

radio

c)

x-ray

d)

ultraviolet

e)

infrared

2.

This lens is an example of what type of lens?

a)

concave

b)

convex

c)

hourglass

d)

refracting

3.

This lens is an example of what type of lens?

a)

concave

b)

convex

c)

refracting

d)

oval

4.

3. Which of the following correctly shows what happens to light when it passes through a convex lens?

a)

1

b)

2

c)

3

d)

4

5.

Tye claims that waves cannot travel through the vacuum of space. Will argues that Tye is incorrect. Which statement should Will use as evidence?

a)

Matter travels from the sun to Earth.

b)

Sound waves travel from the sun to Earth.

c)

Longitudinal waves travel from the sun to Earth.

d)

Electromagnetic radiation travels from the sun to Earth.

6.

Which of the following correctly lists electromagnetic waves in order from highest to lowest frequency?

a)

gamma, X-rays, UV, visible light, infrared, microwaves, radio waves

b)

microwaves, infrared light, UV, gamma, visible light, radio, gamma

c)

gamma, visible light, UV, X-rays, infrared, microwaves, radio waves

d)

radio waves, micro, red, visible light, UV, X-rays, gamma.

7.

What type of electromagnetic waves are created by the sun?

a)

sound

b)

ultraviolet and visible only

c)

ultraviolet, visible, and infrared only

d)

all seven types of electromagnetic waves

8.

What happens to a light wave that is absorbed by matter?

a)

It is reflected from the surface of the matter.

b)

It is refracted.

c)

It bends around the matter.

d)

Its energy is turned into heat.

9.

The four diagrams represent electromagnetic waves. Which wave transmits the MOST energy?

a)

A

b)

B

c)

C

d)

D

10.

In which medium do sound waves travel slowest?

a)

air

b)

ice

c)

solid steel

d)

liquid water

11.

Danika is designing a mobile phone. The mobile phone must meet the following criteria. It must allow people to communicate over large distances. It must be safe for use around humans. It should not use too much energy. Which type of waves would be BEST for use in Danika's design?

a)

X-Rays

b)

Microwaves

c)

Gamma rays

d)

Ultraviolet rays

12.

An echo heard in a canyon and an image seen in a mirror are BOTH produced by which process?

a)

diffraction of waves

b)

refraction of waves

c)

reflection of waves

d)

absorption of waves

13.

Which statement explains why painting a rooftop white can help keep a building cool?

a)

Light waves do not strike white surfaces.

b)

Ultraviolet waves do not strike white surfaces.

c)

A white rooftop refracts the light that falls on it.

d)

A white rooftop reflects the light that falls on it.

14.

The table shows the wavelengths of different colors of visible light. Which of the color choices transmits the MOST energy?

a)

blue

b)

green

c)

violet

d)

red

15.

Which type of waves contains compressions and rarefactions?

a)

microwaves

b)

sound waves

c)

transverse waves

d)

electromagnetic waves

16.

____________ is the number of wavelengths that pass a point in a given time.

a)

Amplitude

b)

Wavelength

c)

Frequency

d)

Rarefaction

17.

The distance between the middle line or resting point and the crest is called the ______________.

a)

crest

b)

amplitude

c)

frequency

d)

wavelength

18.

Isodel wants to make the pitch of a sound wave lower. What should she do?

a)

increase its speed

b)

decrease its frequency

c)

increase its amplitude

d)

decrease its speed

19.

If Erik strikes a drum gently and then strikes it harder, the sound gets louder because

a)

he is increasing its frequency.

b)

he is increasing its wavelength.

c)

he is increasing its amplitude.

d)

he is increasing its resting position.

20.

Sound waves are _______________

a)

Transverse waves

b)

Longitudinal waves

c)

Circular waves

d)

Seismic waves

21.

Which part of the wave is labeled here?

a)

Amplitude

b)

Crest

c)

Trough

d)

Wavelength

22.

_______ carry the greatest amount of energy.

a)

x-rays

b)

gamma rays

c)

infrared rays

d)

visible light

23.

A wave with a large wavelength will have a ______ frequency and _____ energy.

a)

high, low

b)

high, high

c)

low, high

d)

low, low

24.

Cancer can be treated with_______________waves.

a)

Penicillin

b)

Radio

c)

Infrared

d)

Gamma

25.

When light bounces back it is _____ .

a)

Reflected

b)

Refracted

c)

Absorbed

d)

Optical Density

26.

If a sound bounces back it is called ______________.

a)

frequency

b)

sound

c)

pitch

d)

an echo

27.

In which medium does sound travel fastest?

a)

solid

b)

liquid

c)

gas

d)

the speed same in all

28.

When a wave passes from one medium to another, the ________ may change.

a)

speed

b)

frequency

c)

wavelength

d)

speed, frequency, and wavelength

29.

Which wave in the diagram has the greatest wavelength?

a)

1

b)

2

c)

3

d)

4

30.

The point where the rays meet is known as....

a)

fire

b)

the focal point

c)

refraction

d)

plane of the lens

31.

______ is a lens that is thicker on its edges and makes an object appear smaller?

a)

mirror

b)

convex lens

c)

concave lens

d)

prism

32.

The distance between two crests or two troughs of a wave is called:

a)

frequency

b)

amplitude

c)

wavelength

d)

hertz

33.
Which section of the spectrum is the ONLY one we can see?
a)
X-rays
b)
Visible Light
c)
Gamma Rays
d)
Ultraviolet Rays
34.

Select the correct order of waves on the EM spectrum:

a)

Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma

b)

Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio

c)

Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio

d)

Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

35.
Which has the LONGEST wavelength and, therefore, the lowest frequency/energy
a)
Gamma Rays
b)
Radio Waves
c)
Visible Light
d)
Infrared rays
36.

Which color has a longer wavelength than yellow?

a)

GREEN

b)

BLUE

c)

VIOLET

d)

ORANGE

37.
Which wavelength of visible light has the lowest energy?
a)
Red
b)
Yellow
c)
Orange
d)
Blue
38.
Which color in the visible spectrum of light has the highest frequency?
a)
Orange
b)
Red
c)
Blue
d)
Green
39.

As frequency increases, energy of a wave ...

a)

Increases

b)

Decreases

c)

Stays the same

40.
What is the correct order of the EM spectrum from short wavelength to long wavelength?
a)
UV, visible, infrared, microwaves
b)
Infrared, microwave, UV, x-rays
c)
UV, visible violet, visible red, infrared
d)
radio, microwave, UV, gamma
41.
Which has a lower energy: radio waves or gamma rays?
a)
Radio
b)
Gamma
42.
Which has a longer wavelength: infrared or UV?
a)
infrared
b)
UV
43.
Which has a higher energy: blue light or red light?
a)
Blue
b)
Red
44.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
45.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
46.
Electromagnetic waves include the following except
a)
radio waves
b)
X-rays
c)
doing the wave at a football game
d)
microwaves
47.

When a wave bends as it passes through at an angle from one medium to another (example: pencil in a glass of water)

a)

medium

b)

refraction

c)

reflection

d)

interference

48.
All of the following are examples of transverse waves except for:
a)
X - Ray
b)
Visible Light
c)
Sound
d)
Gamma Rays
49.
The shorter the wavelength the 
a)
shorter the frequency
b)
higher the freuqnecy
c)
frequency stays the same
d)
less energy
50.

What happens when Lindsey increases the amplitude of a sound?

a)

it makes the sound louder

b)

it makes the sound travel faster

c)

it increases the wavelength of the sound

d)

it increases the frequency of the sound

51.
Waves that require a medium are called 
a)
mechanical waves
b)
transverse waves
c)
light waves
d)
gamma rays
52.

What should Lawrence call the part of a longitudinal wave system where the waves are squeezed together?

a)

compression

b)

rarefaction

c)

crest

d)

trough

53.
What is frequency?
a)
any disturbance that transmits energy through a medium
b)
the distance from any point on a wave to an identical point on the next wave
c)
the number of waves produced in a given amount of time
d)
when the particles in a longitudinal wave are spread apart
54.
Which letter represents the wave trough?
a)
A
b)
B
c)
C
d)
D
55.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
56.
Sound waves are _______________
a)
Transverse waves
b)
Longitudinal waves
c)
Circular waves
d)
Seismic waves
57.
Light refracts when it
a)
bounces off a surface
b)
changes speed
c)
comes from a laser
d)
spreads out from its source
58.

What type of wave best fits this description: the wave vibrates parallel to the direction of travel.

a)

Longitudinal Wave

b)

Transverse Wave

c)

Compressional Wave

d)

Wavelength

59.
Which rays in the electromagnetic spectrum have the highest frequency?
a)
Gamma Rays
b)
Compressional Waves
c)
Radio Waves
d)
Ultraviolet Rays
60.
_____________________light is the only type of EM wave detected by the human eye.
a)
Red
b)
Gamma
c)
Microwave
d)
Visible
61.

In visible light, which color has the longest wavelength?

a)

Red

b)

Violet

c)

Yellow

d)

Green

62.
This type of Electromagnetic wave shows a break in bones.
a)
gamma ray
b)
x-ray
c)
brokenometer
d)
radio wave
63.
Which letter shows reflection? 
a)
Pathway A
b)
Pathway B
c)
Pathway C
d)
Pathway D
64.
Which term explains the path of the light ray in this diagram?
a)
Convection
b)
Scattering
c)
Absorption
d)
Refraction
65.
What do we call the part of a longitudinal wave that is spread a part?
a)
compression
b)
rarefaction
c)
crest
d)
trough
66.
Name the type of wave that matter moves at right angles to the direction of the wave?
a)
compressional waves
b)
mechanical waves
c)
transverse waves
d)
ultraviolet rays
67.

What is the name of a material in which waves, like sound waves, seismic waves, and waves in a slinky transfer energy?

a)

Vacuum

b)

Medium

c)

Mechanical

d)

Space

68.

This picture is an example of which type of wave?

a)

transverse wave

b)

compression wave

c)

ocean wave

d)

seismic wave

69.

A longitudinal wave, such as a sound wave, can travel through ____.

a)

solids only

b)

liquids only

c)

gas, liquids, and solids

d)

gas and a vacuum only

70.

Identify the characteristic of a transverse wave that doubled from wave A to wave B.

a)

Amplitude

b)

Crest

c)

Trough

d)

Wavelength

71.

Which choice BEST represents the sound waves from a soft low-pitched train rumble that suddenly shifts to a loud, high-pitched squeal of brakes?

a)

A

b)

B

c)

C

d)

D

72.

If we compare and contrast electromagnetic waves with sound waves, all BUT one statement is true. That is

a)

sound waves require a medium to travel while electromagnetic waves do not.

b)

electromagnetic waves can travel through the vacuum of space while sound waves cannot.

c)

electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.

d)

sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

73.

The distance from location C to location E, ________ to __________, equals one wavelength.

a)

amplitude to amplitude

b)

frequency to frequency

c)

compression to compression

d)

compression to rarefaction

74.

Mone't and J'Lyn made a telephone using two cans and a string. It was a very long string. Mone't went upstairs in her house and J'Lyn stayed downstairs. Mone't spoke softly into the can. "I can hear you!' J'Lyn said back. How can this happen?

a)

Sound waves travel through a vacuum.

b)

Sound waves travel from high to low.

c)

Sound waves travel through solids like the string.

d)

Mone't talked so loudly that J'Lyn could hear her without the phone.

75.

As a ray of light becomes brighter, its corresponding light wave, shown here, will increase in amplitude, making it look MOST like which wave?

a)

A

b)

B

c)

C

d)

D

76.

Looking at waves A and B. Which description correctly describes the waves?

a)

Wave A has twice the energy because it has a frequency twice as large.

b)

Wave A has twice the energy because it has an amplitude twice as large.

c)

Wave B has twice the energy because it has an amplitude twice as large.

d)

Waves A and B gave the same energy because they have the same amplitude.

77.

The diagram shows a wave. The quantity shown is the amplitude. This quantity is directly proportional to which of these other quantities?

a)

Energy

b)

Frequency

c)

Period

d)

Wavelength

78.

The energy supplied to a speaker is increased. What will happen to the sound the speaker produces?

a)

The sound will be lower pitch.

b)

The sound will become a high pitched squeal.

c)

The sound will be louder or greater amplitude.

d)

The sound will remain unchanged if the speaker is not changed.

79.

If the above two waveforms were sound waves, we would hear the ___________ wave louder. If the above two waveforms were light waves, we would see the ________ wave dimmer.

a)

red, red

b)

green, red

c)

red, green

d)

green, green

80.

All of the waves in the electromagnetic spectrum are _______ waves.

a)

compression

b)

longitudinal

c)

mechanical

d)

transverse

81.

An old movie poster used a quote "In space, no one can hear you scream!" Why this is true or not true?

a)

The quote is incorrect, you can hear sound in outer space.

b)

Sound cannot be polarized. So, you cannot hear sound in space.

c)

Sound is an electromagnetic wave and needs no medium to travel through.

d)

Sound needs a medium for the wave to vibrate and there is nothing in space to vibrate.

82.

What do we call the distance labeled from A to B and what could we do to the note played on an instrument to change that distance?

a)

From A to B is known as the wavelength and changing the pitch of the note will change its length.

b)

From A to B is known as the amplitude and changing the loudness of the note will change its length.

c)

From A to B is known as the wavelength and changing the amplitude of the note will change its length.

d)

From A to B is known as the wave height and changing the amplitude of the note will change its length.

83.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
84.
Sound does not travel in space because
a)
Space is too far away.
b)
There is no matter in space.
c)
Space is the final frontier
d)
Space has planets.
85.
What medium does sound travel through slowest?
a)
gas
b)
solid
c)
liquid
d)
trees
86.

How does a sound wave travel ?

a)

Sound waves travels perpendicular to the direction of wave travel.

b)

Sound waves travels from one end to another end by reflection.

c)

Sound waves travels by displacement of particles in a medium, through a series of compressions and rarefactions.

d)

Sound waves cannot travel in vacuum.

87.

Why is the school library covered with carpet?

a)

so Junior can make a lot of noise

b)

to help absorb sounds to keep it quiet

c)

because it looks good

d)

to help absorb sounds so it can stay noisy

88.
What does echolocation mean?
a)
moving from a cold place to a warm place
b)
finding missing objects
c)
using sound waves to find objects
d)
seeking shelter from bad weather.
89.

The density of a medium affects the speed of sound waves.

a)

True

b)

False

90.

Regular disturbances that carry energy through matter or space

a)

crest

b)

energy

c)

wave

d)

trough

91.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
92.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
93.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
94.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
95.

What causes a wave?

a)

matter

b)

vibrations

c)

mediums

d)

touchdowns

96.
What object would absorb the most radiation?
a)
A black T-shirt
b)
A mirror
c)
A white skateboard
d)
A red apple
97.
Which object would be the best at reflecting light waves?
a)
windows
b)
mirrors
c)
notebooks
d)
tables
98.
Which of the following represents refraction?
a)
A
b)
B
c)
C
d)
D
99.
Which of the figures represents reflection?
a)
A
b)
B
c)
C
d)
D
100.
Hey!  That straw looks broken.  Why?
a)
reflection
b)
refraction
c)
transmission
d)
absorption
101.

What is causing J'Nae to be able to see two sets of mountains in this picture?

a)

refraction of light

b)

reflection of light

c)

transmission of light

d)

absorption of light

102.

Jarnel is wearing a yellow shirt. What behavior is causing our eye to see the yellow waves?

a)

absorption

b)

transmission

c)

reflection

d)

refraction

103.
What does it mean to refract?
a)
bounce off
b)
to bend
c)
curve outward
d)
reflect
104.
This wave has the second highest frequency on the spectrum. 
a)
microwaves
b)
visible light
c)
x-rays
d)
gamma ray
105.
The higher the frequency the ______ the energy. 
a)
higher
b)
lower
c)
neither, stays the same
106.
a)

Diffraction

b)

Reflection

c)

Refraction

d)

Absorption

107.

If a material absorbs all frequencies of light waves EXCEPT green, what color will be perceived by Elyssia when she looks at the material?

a)

Green

b)

White

c)

Black

d)

Yellow

108.

If all light waves are absorbed by a material, then what color will Anai perceive when she looks at the material?

a)

White

b)

Black

c)

Red

d)

Green

109.

The color you see is the color that is ___.

a)

reflected

b)

absorbed

c)

both reflected AND absorbed

d)

neither reflected nor absorbed

110.

A shirt reflects all light ... what color is the shirt?

a)

Black

b)

Blue

c)

Magenta

d)

White

111.
Sound is able to travel faster in solids than in air because the molecules in a solid are
a)
closer together than air molecules
b)
more easily moved than air molecules
c)
moving faster than air moleculesmoving faster than air molecules
d)
larger than air molecules
112.
The loudness of sound can be changed by
a)
decreasing pitch
b)
increasing the frequency
c)
increasing the amplitude
d)
decreasing the wavelength
113.
Sound waves travel the fastest through dense materials. Through which of these would sound waves travel the SLOWEST?
a)
air
b)
glass
c)
metal
d)
water
114.

At a traffic light, Alex hears an approaching fire truck with its sirens blowing loudly. As the fire truck gets closer, the frequencies of the sirens are higher. As the truck passes him, the frequencies begin to get lower. This is an example of

a)

THE PITCH TO FREQUENCY RATIO

b)

THE DOPPLER EFFECT

c)

THE SIREN EFFECT

d)

THE SOUND EFFECT

115.
Low frequency =_________pitch
a)
HIGH
b)
LOW
c)
MEDIUM
d)
STRAIGHT
116.
High frequency =______________pitch
a)
HIGH
b)
LOW
c)
MEDIUM
d)
STRAIGHT
117.
The medium through sound waves travel affects the
a)
SPEED OF THE SOUND
b)
THE AMPLITUDE OF THE WAVES
c)
THE NUMBER OF WAVES PER SECOND
d)
THE SOUND QUALITY
118.

What kind of wave is this?

a)

Transverse

b)

Longitudinal

c)

Electromagnetic

d)

Mechanical

119.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
120.
A converging lens is also known as a ____ lens.
a)
convex
b)
concave
c)
double
d)
refracted
121.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
122.
A diverging lens is also known as a ____lens.
a)
refracted
b)
diffracted
c)
convex
d)
concave
123.
___ is when light travels through a material and bends.
a)
Diffraction
b)
Dispersion
c)
Mirage
d)
Refraction
124.
Is a convex lens thicker or thinner in the middle?
a)
Thicker 
b)
Thinner 
125.
What type of lens do humans have in their eyes? 
a)
Concave Lens 
b)
Convex Lens 
126.

Why does light refract when it encounters the glass in a lens?

a)

because it speeds up, which causes it to bend

b)

because it slows down, which causes it to bend

c)

because it hits a dense medium, which causes it to bounce off

d)

because it gets absorbed, which causes it to lessen in intensity

127.

Which image CORRECTLY shows how light behaves when it travels from air through glass?

a)
b)
c)
d)
128.

Refraction makes an object appear bent and occurs when a wave

a)

Changes medium

b)

Bounces back

c)

Spreads out

d)

Interferes

129.

Which of the following ray diagram best illustrates refraction?

a)
b)
c)
d)
130.

The amplitude of a sound wave is to loudness as the amplitude of a light wave is to

a)

frequency

b)

brightness

c)

color

d)

speed

131.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
132.
A converging lens is also known as a ____ lens.
a)
convex
b)
concave
c)
double
d)
refracted
133.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
134.
A diverging lens is also known as a ____lens.
a)
refracted
b)
diffracted
c)
convex
d)
concave
135.

How does a concave lens differ from a convex lens?

a)

A convex lens is another way to describe a plane mirror; a concave lens is curved

b)

A concave lens is curved inward on both sides; a convex lens is on only one side

c)

A convex lens has a thick center and thin edges, a concave lens has a thin center and thicker edges

d)

A convex lens has a thin center and thick edges. a concave lens has a thick center and thinner edges

136.
Which window is opaque?
a)
Window 1
b)
Window 2
c)
Window 3
d)
None
137.
What is B?
a)
Angle of incidence
b)
Angle of reflection
c)
Incident ray
d)
Reflected ray
138.
The following is a picture of what type of mirror? 
a)
Convex (diverging) mirror
b)
Concave (converging) mirror
c)
Plane Mirror
d)
Flat Mirror
139.

Which pictures shows a translucent image?

a)
b)
c)
140.

What type of object is shown in the picture?

a)

opaque

b)

transparent

c)

translucent

141.

___________ materials do not allow light waves to pass through.

a)

Opaque

b)

Transparent

c)

Translucent

142.

__________ materials allow light waves to pass through easily.

a)

Opaque

b)

Transparent

c)

Translucent

143.
Which objects on the table are "Opaque"?
a)
Pitcher; Supply Box; Pencil
b)
Book; Pencil; Rock
c)
Pencil; Book; Goggles
144.

Which lens represents the path light takes through a diverging lens?

a)
b)
c)
d)
145.

Which figure represents the path light takes through a converging lens?

a)
b)
c)
d)
146.

A shopkeeper wants to keep an eye on his store in order to prevent shoplifting. What could the shopkeeper hang on the wall in order to see a wider image of his store and his customers?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

147.

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

148.

Which statement about waves is true?

a)

All waves travel through a medium

b)

All waves contain crests and troughs

c)

All waves contain compressions and rarefactions

d)

All waves transmit energy

149.

Wave A and Wave B have the same frequency and wavelength. Wave A has a greater amplitude than Wave B. Which statement best compares the two waves?

a)

Wave A has more energy than Wave B

b)

Wave B has more energy than Wave A

c)

Wave B transmits energy through matter, while Wave A does not

d)

Wave A transmits energy through matter, while Wave B does not

150.

Which waves contain compressions and rarefactions?

a)

transverse waves

b)

longitudinal waves

c)

electromagnetic waves

d)

all waves

151.

A bell and a siren are producing sound waves. The sound wave produced by the bell has a low frequency. The sound wave produced by the siren has a high frequency. Based on this information, which of the following must be true?

a)

The sound wave produced by the bell has a shorter wavelength than the sound wave produced by the siren

b)

The sound wave produced by the bell has a longer wavelength than the sound wave produced by the siren

c)

The sound wave produced by the bell has a higher amplitude than the sound wave produced by the siren

d)

The sound wave produced by the bell has a lower amplitude than the sound wave produced by the siren

152.

A musician is playing an electric guitar. She turns a knob to increase the amplitude of the sound wave produced. How does the sound change?

a)

the pitch increases

b)

the pitch decreases

c)

the volume increases

d)

the volume decreases

153.

A student yells from one side of Canyon A and records the time it takes to hear an echo. The student repeats the process for Canyon B. The time recorded for Canyon B is longer than for Canyon A. Which is the most likely conclusion based on this information?

a)

The rock in Canyon A is denser than the rock in Canyon B

b)

The rock in Canyon A is stiffer than the rock in Canyon B

c)

The distance across Canyon A is longer than the distance across Canyon B

d)

The distance across Canyon A is shorter than the distance across Canyon B

154.

How do electromagnetic waves differ from mechanical waves?

a)

Mechanical waves have crests and troughs, but electromagnetic waves do not

b)

Mechanical waves need a medium through which to travel, but electromagnetic waves do not

c)

Electromagnetic waves come in many types, but mechanical waves are all the same

d)

Electromagnetic waves carry energy, while mechanical waves carry matter

155.

Which statement explains why a green leaf looks green?

a)

The leaf refracts sunlight, causing it to appear green

b)

The leaf diffracts sunlight, causing it to appear green

c)

The leaf reflects green light and absorbs other colors

d)

The leaf absorbs green light and reflects other colors

156.

Which of the following best describes the purpose of a lens in a camera?

a)

to focus light waves

b)

to reflect light waves

c)

to absorb an image

d)

to produce light

157.

What happens to a light wave that is absorbed by matter?

a)

It is reflected from the surface of the matter

b)

It is refracted

c)

It bends around the matter

d)

Its energy is turned into heat

158.

A wave with a large wavelength will have a ______ frequency and _____ energy.

a)

high, low

b)

high, high

c)

low, high

d)

low, low

159.

Cancer can be treated with_______________waves.

a)

Penicillin

b)

Radio

c)

Infrared

d)

Gamma

160.

Which choice BEST represents the sound waves from a soft low-pitched train rumble that suddenly shifts to a loud, high-pitched squeal of brakes?

a)

A

b)

B

c)

C

d)

D

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