Practice Test Answers

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As the temperature of a medium increases, the speed of the sound wave

A
decreases because the particles bump into each other less often.
B
increases because the particles bump into each other less often.
C
increases because the particles bump into each other more often.
D
decreases because the particles bump into each other more often.
3

Which do sound waves travel fastest through?

A
liquids
B
mixtures
C
gases
D
solids
6

Which process would correctly calculate the frequency of a wave?

A
dividing speed by wavelength
B
multiplying frequency by period
C
dividing wavelength by period
D
dividing frequency by wavelength
7

Which of these most directly affects what happens to white light when it hits an object?

A
the properties of the object
B
the distance of the object from the light
C
the speed at which the light travels
D
the source of the light
9

Which part of the electromagnetic spectrum is nearest to X-rays?

A
gamma rays
B
infrared light
C
microwaves
D
radio waves
10

Which best describes what happens if two waves meet and build on each other?

A
absorption
B
destructive interference
C
reflection
D
constructive interference
11

Which waves can travel through space?

A
electromagnetic and mechanical waves
B
electromagnetic waves only
C
mechanical waves only
D
longitudinal and electromagnetic waves
13

Which label belongs in the area marked X?

A
Captures radio waves
B
Sends out radio waves
C
Amplifies radio waves
D
Demodulates radio waves
14

Which is shown by the letter X?

A
wavelength
B
crest
C
trough
D
amplitude

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