General Physics
Review Assignment
Chapter 25
Waves
Answers
1. A wave whose direction of travel is parallel to the direction of the vibration
causing the wave is called a __longitudinal wave________.
2. Two waves arrive at the same place at the same time exactly in phase with each
other. Each wave has an amplitude of 1 m. The resulting wave has an amplitude
of _2 m______.
3. The distance between successive identical parts of a wave is called its
___wavelength____.
4. During a single period, the distance traveled by a wave is __1 wavelength____.
5. Sound is an example of a __longitudinal wave_____ wave.
6. When two or more waves are in the same place at the same time, the resulting
effect is called __interference______.
7. You dip your finger repeatedly in to water and make waves. If you dip your
finger more frequently, the wavelength of the waves __decreases_____.
8. If you double the frequency of a vibrating object, its period __is cut in half_____.
9. The time needed for a pendulum to make one complete cycle is its _the
period_________.
10. The source of all wave motion is _a vibration___.
11. The Doppler Effect is the change in observed frequency due to _movement of the
source or the receiver____.
12. A __transverse_______wave can travel through a vacuum.
13. A wave whose motion is perpendicular to the direction of wave propagation is a
__transverse wave______________.
14. When two waves occupy the same space at the same time, and the waves are out
of phase with each other, _total destructive interference____ occurs.
15. Light is an example of a __transverse___wave.
16. A tuning fork has a frequency of 280 Hz, and the wavelength of the sound
produced is 1.5 m. What is the wave speed (velocity) of this wave? 420 m/s
17. A wave has a wave speed (velocity) of 5.0 m/s, and a frequency of 2.5 Hz. What
is its wavelength? 2.0 m
18. Red light has a wavelength of 7.0 x 10-7 m. What is its frequency? 4.3 x 1014 Hz
19. Violet light has a frequency of 7.5 x 1014 Hz. What is its wavelength? 4.0 x 10-7
m
20. A jump rope is shaken producing a wave with a wavelength of 0.5 m. The crest of
the wave passes a certain point 4 times per second. What is the wave speed
(velocity) of the wave? 2 m/s