AnswersFL-2003310-Physical ScienceUnit Test

Unit Test — Unit test Answers

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21
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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
22
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Atomic bombs send out a shock wave when they are detonated. This occurs because the bomb’s detonation superheats the air particles nearby, which cause them to bump into other air particles that further the wave.Which statement can most likely be made about the shock waves of atomic bombs?

A
They are mechanical waves.
B
They are electromagnetic waves.
C
They will act like x-rays.
D
They will act like light rays.
23

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.
24

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.
25

Changes in which property are heard when the Doppler effect occurs?

A
pitch
B
amplitude
C
volume
D
wavelength
26

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.
27

Four waves are produced when a harp is strummed at four different times.Which wave will produce the highest pitch?

Question illustration
A
Wave 1
B
Wave 2
C
Wave 3
D
Wave 4
28

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

A
wavelength
B
amplitude
C
frequency
D
compression

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