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Introduction To Waves
Test Description: Mechanical Waves
Instructions: Answer all questions to get your test result.
1) Pitch is measured in
A
decibels
B
hertz
C
watts
D
amplitudes
2) Higher frequencies produce ___ pitches.
A
higher
B
lower
3) When the energy of a wave doubles,
A
frequency also doubles
B
frequency is cut in half
4) Sound waves are longitudinal waves that can travel only through matter
A
false
B
true
5) When the particles are closest together in a longitudinal wave, that is called a
A
rarefaction
B
compression
C
crest
D
trough
6) When solids or liquids cool down, sound travels ___ through them.
A
faster
B
slower
7) The more dense a medium,
A
the slower the sound will travel through it
B
the faster the sound will travel through it
8) Which part of the ear transforms sound waves into nerve impulses?
A
the anvil
B
the ear canal
C
the eardrum
D
the cochlea
9) The middle ear's job is to
A
amplify sound
B
all of the above
C
transmit sound to the brain
D
collect sound
10) The passage of a wave through a medium is
A
transmission
B
diffraction
C
absorbtion
D
diffusion
11) A sound wave strikes a barrier. It bounces off at an angle larger than the angle it struck the barrier at.
A
false
B
true
12) The bouncing of a wave off a surface
A
diffusion
B
transmission
C
reflection
D
refraction
13) Waves that cause the particles in a medium to move parallel to the direction that the wave travels.
A
mechanical waves
B
longitudinal waves
C
transverse waves
14) Which can mechanical waves NOT travel through?
A
liquids
B
empty space
C
gases
D
solids
15) Matter is transferred when a wave travels.
A
true
B
false
16) Wavelength decreases as frequency increases.
A
false
B
true
17) The outer ear
A
collects sound
B
amplifies sound
C
transfers sound waves to the brain
18) Which is NOT a bone in the middle ear?
A
bow
B
hammer
C
anvil
D
stirrup
19) The change in direction of a wave when it travels by the edge of an object or through an opening
A
diffraction
B
amplitude
C
transmission
D
diffusion
20) All sound waves that travel through a medium are absorbed.
A
true
B
false
*select an answer for all questions
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