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