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Ch. 17-Part 3
Test Description: Content
Instructions: Answer all questions to get your test result.
1) As the amplitude of a sound wave increases, energy _________________.
A
increases
B
stays the same
C
decreases
D
both a and b
2) As frequency increases, pitch _____________________.
A
decreases
B
both b and c
C
stays the same
D
increases
3) What are the decibels(db) that damage to one's hearing occurs?
A
60 db
B
40 db
C
30 db
D
85 db
4) When sound is traveling towards you, there is ___________________ frequency.
A
low
B
medium
C
zero
D
high
5) When sound is traveling away from you, there is ______________ frequency.
A
medium
B
high
C
low
D
zero
6) Natural frequency has to do with _______________________________________________.
A
the way sound bends and the material it is made of
B
the way it is shaped and the energy it has
C
the way sound moves and the energy it has
D
the way it is shaped and the material it's made of
7) Pure tone only produces _____________ frequency.
A
1
B
2
C
3
D
10
8) The lowest frequency produced by a vibrating object is _____________________________.
A
Fundamental frequency
B
natural frequency
C
natural pitch
D
Fundamental pitch
9) A car horn changes frequency as it passes because of the _________________________.
A
Fundamental frequency
B
Doppler effect
C
natural pitch
D
natural frequency
10) Sound waves travel __________ in solids and _____________ in gases.
A
none of the above
B
only and not
C
fastest and lowest
D
lowest and fastest
11) used by some animals to navigate and hunt
A
echo
B
fundamental frequency
C
echolocation
D
natural frequency
12) occurs when a wave spreads out after passing through an opening, or bends around an obstacle
A
fundamental frequency
B
frefraction
C
diffraction
D
reflection
*select an answer for all questions
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