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Ch 10 - Waves And Sound
Test Description: Mechanical waves
Instructions: Answer all questions to get your test result.
1) Sound is a disturbance that travels through a medium as a
A
longitudinal wave
B
surface wave
C
transverse wave
D
standing wave
2) The pitch of a sound that you hear depends on the wave's
A
frequency
B
loudness
C
intensity
D
speed
3) Which of the following factors determines the loudness of a sound
A
density of the medium
B
frequency of the sound wave
C
amplitude of the sound wave
D
temperature of the medium
4) As the frequency of a wave traveling at a constant speed increases, its _________ decreases
A
sound
B
wavelength
C
speed
D
resonance
5) In a longitudinal wave moving along a spring, areas where the coils are farthest apart are called
A
compressions
B
depressions
C
rarefactions
D
interference
6) The more ________ a wave has, the greater its amplitude.
A
energy
B
troughs
C
crests
D
speed
7) The spreading out of waves after they pass through a narrow opening or around a barrier is called
A
constructive interference
B
resonance
C
destructive interference
D
diffraction
8) When the crests of one wave align with the ____________ of an identical wave, the amplitude of the resulting wave is zero.
A
nodes
B
antinodes
C
troughs
D
rest position
9) The speed of sound in air decreases in _______ temperature.
A
hotter
B
colder
C
liquid
D
solid
10) The law of reflection states that the angle of incidence is _________ the angle of reflection.
A
bends away from
B
less than
C
equal to
D
greater than
*select an answer for all questions
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