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Ch 15
Test Description: Wves
Instructions: Answer all questions to get your test result.
1) Radio waves are an example of electromagnetic waves
A
false
B
true
2) according to the Doppler effect, light from a star moving away from Earth will have a higher frequency than light from a star moving toward the Earth
A
true
B
false
3) light waves are examples of transverse waves
A
false
B
true
4) as the period of a wave increases, the frequency increases
A
true
B
false
5) when light passes from air to glass, the light may change direction due to reflection
A
true
B
false
6) A person is standing still and listening to a siren sounding an alarm. Tghe frequency of the sounmd is 500Hz. The person begins to run toward the sound at a rate of 20 m/a. The
A
change by 20 m/s
B
increase
C
remain the same
D
decrease
7) sound waves from a radio generally travel in which medium
A
light
B
air
C
earth
D
water
8) our eyes can detect light only within a range of __ called visible light
A
periods
B
speeds
C
frequencies
D
medium
9) the max displacement of a particle by a wave is called
A
frequency
B
period
C
amplitude
D
wavelength
10) the ______ is the distance between two crests of a wave
A
period
B
frequency
C
wavelength
D
amplitude
*select an answer for all questions
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