Wave Math Quiz
Read each question carefully then answer the question. You can use your notes and the math
worksheet we went over yesterday to help you on this quiz.
1
Multiple Choice
1 point
What is the period of a low frequency sound wave (20 hz)?
.02 s
.03 s
.04 s
.05 s
2
Multiple Choice
1 point
A wave is introduced into a thin wire held tight at each end. It has an amplitude of 3.8 cm, a
frequency of 51.2 Hz and a distance from a crest to the neighboring trough of 12.8 cm. Determine
the period of such a wave.
0.00195 s
0.00456 s
0.0456 s
0.0195 s
3
Multiple Choice
1 point
Kim made a wave in a spring by pushing and pulling on one end. The wavelength is 0.1 m, and the
wave frequency is 2 hertz. What is the speed of the wave
0.05 m/s
0.2 m/s
2 m/s
3 m/s
4
Multiple Choice
1 point
Calculator
The time required for the sound waves (v = 340 m/s) to travel from the tuning fork to point A is ____
.
0.020 s
0.059 s
0.6 s
2.9 s
5
Multiple Choice
1 point
Calculator
On a hot summer day, 15 wave crests pass a surfer floating on a board in 45 seconds. What is the
frequency of this wave?
.022 Hz
.066 Hz
.33 Hz
675 Hz
6
Multiple Choice
1 point
What is the speed of a wave that has a wavelength of 2 and a frequency of 2.5?
2.5 m/s
4.5 m/s
5 m/s
6 m/s
7
Multiple Choice
1 point
If a sound wave travels at 340 m/s and has a frequency of 440 Hz, what is its wavelength?
.77 m
1.6 m
780 m
149,600 m
8
Multiple Choice
1 point
An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The
camera sends out sound waves that reflect off distant objects and return to the camera. A sensor
detects the time it takes for the waves to return and then determines the distance an object is
from the camera. The camera lens then focuses at that distance.
If a sound wave (speed = 340 m/s) returns to the camera 0.150 seconds after leaving the camera,
then how far away is the object?
75 m
51 m
25.5 m
15.25 m