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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
both a and b
B
decreases
C
stays the same
D
increases
2) As frequency increases, pitch _____________________.
A
decreases
B
increases
C
stays the same
D
both b and c
3) What are the decibels(db) that damage to one's hearing occurs?
A
85 db
B
30 db
C
40 db
D
60 db
4) When sound is traveling towards you, there is ___________________ frequency.
A
low
B
zero
C
medium
D
high
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 it is shaped and the material it's made of
C
the way sound bends and the material it is made of
D
the way it is shaped and the energy it has
7) Pure tone only produces _____________ frequency.
A
2
B
10
C
3
D
1
8) The lowest frequency produced by a vibrating object is _____________________________.
A
natural pitch
B
Fundamental pitch
C
natural frequency
D
Fundamental frequency
9) A car horn changes frequency as it passes because of the _________________________.
A
Fundamental frequency
B
natural pitch
C
Doppler effect
D
natural frequency
10) Sound waves travel __________ in solids and _____________ in gases.
A
only and not
B
fastest and lowest
C
lowest and fastest
D
none of the above
11) used by some animals to navigate and hunt
A
fundamental frequency
B
natural 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
frefraction
D
fundamental frequency
*select an answer for all questions
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