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Physics 4th Q Exam-Waves
Test Description: Waves questions
Instructions: Answer all questions to get your test result.
1) The high point of a wave is called
A
wavelength
B
crest
C
amplitude
D
trough
2) The low point of a wave is called
A
crest
B
amplitude
C
trough
D
wavelength
3) The length of a wave until it repeats itself
A
amplitude
B
trough
C
crest
D
wavelength
4) The displacement of the wave from rest. The height of the wave
A
trough
B
amplitude
C
crest
D
wavelength
5) A wave that vibrates parallel to motion is a
A
gamma ray
B
longitudinal wave
C
electromagnetic wave
D
transverse wave
6) Sound waves are
A
transverse waves
B
x-rays
C
longitudinal waves
D
gamma rays
7) A change in apparent pitch as a sound source moves relative to an observer is called
A
Longitudinal waves
B
Darwin's effect
C
Einstein's theory of relativity
D
Doppler effect
8) find the wave period with a frequency of 5hz
A
2.0s
B
0.5s
C
0.2s
D
5.0s
9) wavelength is measured in
A
decibels
B
hertz
C
m/s
D
meters
10) If a sound source moves towards you, what happens to the perceived pitch?
A
it goes away
B
it remains the same
C
it sounds higher
D
it sounds lower
11) what is the symbol for wavelength?
A
f
B
T
C
lambda
D
v
12) a wave with an amplitude of 1m meets a wave with an amplitude of 0.9m in destructive interference. What is the new amplitude?
A
2m
B
1.90m
C
0m
D
0.10m
13) A wave with an amplitude of 2.0m meets a wave with an amplitude of 2.0m in constructive interference. What is the resultant amplitude?
A
2.0m
B
0m
C
6.0m
D
4.0m
14) According to principle of superposition, when 2 waves meet, the resultant amplitude is _____of the 2 waves
A
no different than
B
the sum of
C
greater than
D
less than
15) A piano emits a frequency of 4200 Hz. What is the wavelength of the sound wave produced by this instrument? Use the speed of sound in air as 343m/s
A
12m
B
4500m
C
320m
D
0.082m
*select an answer for all questions
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