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Waves, Unit I
Waves, Unit I
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Pretest (M/C only) for Outcome I, Waves
Flashcards
20 cards
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Questions
20
Answers
1
The amplitude of a wave is 5 meters. The total wave displacement is ______ .
7.5 meters
2.5 meters
10 meters
0 meters
2
A tuning fork of 254 Hz and one of 256 Hz are struck together. What is the beat frequency?
3 Hz
4 Hz
2 Hz
1 Hz
3
Musical instruments make _______ .
stationary waves
none of the above
standing waves
sitting waves
4
______ is faster than sound.
Light
Mrs. D
A car
A train
5
A change in wave frequency due to motion by the observer or source is ______ .
a longitudinal wave
the doppler shift
a transverse wave
a standing wave
6
Sound depends on the _______ of air.
temperature
wavelength
frequency
amplitude
7
Which of the following is a longitudinal wave?
Gamma Radiation
Radio Waves
Light
Sound
8
A tuning fork will resonate if _____ the frequency is sent.
7/12
5/8
1/3
1/2
9
Vibrations are the source of all _______ .
harmonics
movement of matter
none of the above
waves
10
You have a 100 Hz tuning fork. You strike a piano key and hear 3 beats. The piano key is at __.
97 Hz
not enough information
103 Hz
100 Hz
11
If an object is forced to vibrate at its natural frequency, then _____ is occurring.
frequency
amplitude
resonance
period
12
The threshold of hearing is 0 dB. How much more intense is 20 dB?
200
100
20
10
13
The inverse of the time needed for one cycle is _______ .
period
velocity
frequency
amplitude
14
The distance from a crest to the next trough is _______ .
a wavelength
1/2 wavelength
2 wavelengths
a period
15
A transverse wave has no ______.
wavelength
speed
none of the above
amplitude
16
Because sound travels best in denser material, _____ will have the fastest sound.
water
sound
air
metal
17
As you lose energy, the _______ gets smaller.
period
amplitude
frequency
velocity
18
Sound can be completely canceled if ________ .
waves constructively interfere
none of the above
waves are standing
waves destructively interfere
19
2 waves are in step. 1 has an amplitude of 5m, the other has 7m. The resulting wave __.
has an amplitude of -2 meters
has an amplitude of 2 meters
has an amplitude of 35 meters
has an amplitude of 12 meters
20
Light is an example of a _______ .
standing wave
transverse wave
longitudinal wave
doppler shift
