AnswersFL-2003310-Physical Science CRLab: Thermal Energy Transfer

Lab: Thermal Energy Transfer — Unit test Answers

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The frequency of a wave does not change as it passes from one medium to another.What will most likely happen if a light wave moves from the air into a solid?

A
The wavelength of the light wave will increase.
B
The speed of the light wave will decrease.
C
The wavelength of the light wave will remain the same.
D
The speed of the light wave will remain the same.
2
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When light bends as it passes from one transparent object to another, the light is ________.Which best completes the statement?

A
absorbed
B
reflected
C
refracted
D
bounced
3

Which part of the electromagnetic spectrum is necessary for the sense of sight in humans?

A
radio waves
B
gamma rays
C
infrared light
D
visible light
4

If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime?

A
Ultraviolet light detects the presence of radioactive substances.
B
Ultraviolet light shows cold areas as blue and warm areas as red.
C
Ultraviolet light causes substances to fluoresce and give off visible light.
D
Ultraviolet light transmits information to AM and FM radio receivers.
5

When sound is created, it travels to the ear through a

A
compression.
B
medium.
C
rarefaction.
D
surface.
6

After the 1600s, how did observations of light being refracted change the way most scientists thought about light?

A
They no longer believed that light acted as waves.
B
They began to believe that light acted as waves.
C
They no longer believed that light acted as particles.
D
They began to believe that light acted as particles.
7

Which equation should be used to calculate the speed of a wave?

A
speed = frequency x wavelength
B
speed = frequency x hertz
C
speed = period x wavelength
D
speed = period x hertz
8

Which best describes what occurs when an object takes in a wave as the wave hits it?

A
transmission
B
absorption
C
reflection
D
refraction
9

What will occur when the trough of Wave A overlaps the crest of Wave B?

A
Destructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
B
Constructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
C
Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
D
Constructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
10

Which statement can be made about waves A and B?

A
Wave A has a lower amplitude than Wave B.
B
Wave A has a higher amplitude than Wave B.
C
Wave A has a lower frequency than Wave B.
D
Wave A has the same amplitude as Wave B.
11

Which refers to the number of wavelengths that pass a fixed point in a second?

A
wavelength
B
amplitude
C
frequency
D
compression
12

Which part of the electromagnetic spectrum has the longest wavelengths?

A
radio waves
B
gamma rays
C
infrared light
D
ultraviolet light
13

Henri draws a wave that has a 4 cm distance between the midpoint and the trough. Geri draws a wave that has an 8 cm vertical distance from the trough to the crest.Which statement best describes the energy in Henri and Geri’s waves?

A
Henri’s wave has a higher amplitude and more energy.
B
Henri’s wave and Geri’s wave have the same amplitude and the same energy.
C
Henri’s wave and Geri’s wave have the same amplitude, but Geri’s has more energy.
D
Geri’s wave has a higher amplitude and more energy.
14

Sound waves are produced when something is caused to

A
reflect.
B
vibrate.
C
slow down.
D
get warmer.
15

A museum sets up a display of fluorescent minerals. Which best describes how electromagnetic waves can be used to enhance the display?

A
Infrared light shining on the minerals will cause them to give off visible light.
B
Visible light shining on the minerals will cause them to give off infrared light.
C
Ultraviolet light shining on the minerals will cause them to give off visible light.
D
Visible light shining on the minerals will cause them to give off ultraviolet light.
16

What do diffraction and refraction have in common?

A
They both involve interference.
B
They both involve wave interactions.
C
They both involve reflection.
D
They both involve construction.
17

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?

A
red
B
blue
C
orange
D
green
18

Prisms separate ________ light, such as that from the Sun, by wavelength.Which best completes the statement?

A
ultraviolet
B
white
C
infrared
D
black
19

Sound Wave A is moving through a medium that is decreasing in temperature.Sound Wave B is moving from a liquid to a gas medium.

A
They will speed up.
B
They will increase the density of their medium.
C
They will slow down.
D
They will decrease the density of their medium.
20

What is occurring when two waves traveling along the same medium meet and cancel each other out?

A
destructive interference
B
constructive interference
C
reflection
D
refraction

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