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Sound
Test Description: 26.6-26.8
Instructions: Answer all questions to get your test result.
1) Almost everything has a natural frequency
A
True
B
False
2) Resonance occurs when
A
an object is forced to vibrate at its natural frequency
B
sound changes speed when going from one medium to another
C
the sound wave is amplified
D
sound reflects
3) When an object is made to vibrate by another vibrating object that is nearby
A
forced vibration
B
natural frequency
C
resonance
D
interference
4) Even a steel bridge can collapse due to resonance.
A
True
B
False
5) If an acoustic guitar did not have a sounding board (no hole in its body), the guitar would
A
make no sound at all
B
make little sounds that you could barely hear
C
sound the same a usual
6) You drop a baseball/softball bat on the ground. The sound produced is
A
in resonance
B
a forced vibration
C
vibrating at the bat's natural frquency
7) A singer shattering a glass with her voice is a demonstration of
A
interference
B
resonance
C
beats
D
an echo
8) When a sound wave is resonating the sound produced will be
A
softer
B
no change in sound
C
louder
9) Waves produced during resonance have a(n) ______________ amplitude.
A
lower
B
higher
C
unchanged
10) Tacoma Narrows bridge collapsed due to
A
destructive interference
B
resonance
C
constructive interference
D
beats
*select an answer for all questions
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