# Chapter 14

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1. T/F:
As the frequency of the wave increases, the speed of the wave increases if the waelength stays the same.
True
2. T/F:
Light travels faster in glass than it does in a vacuum.
False, slower
3. T/F:
A wave transports energy but not matter.
True
4. T/F:
Radio waves are an example of electromagnetic waves.
True
5. T/F:
Visible light waves do require a medium in which to travel.
False, do not
6. T/F:
Sound waves are examples of longitudinal waves.
True
7. T/F:
Light waves are examples of transverse waves.
True
8. T/F:
The energy of a mechanical wave depends on the amplitude of the wave.
True
9. T/F:
As the frequency of sound waves incresaes, the wavelength of the sound waves decresases.
True
10. T/F:
As the period of a wave increases, the frequence increases.
False, decreases
11. T/F:
The speed of sound at high altitudes, where the air is less dense, is greater than the speed of sound at low altitudes, where the air is more dense.
False, less
12. T/F:
The color of visible light depends of the wavelength of the light.
True
13. T/F:
Sound waves travel faster through air than through solids.
False, slower
14. T/F:
When a wave reflects from a fixed boundary, the wave changes direction of travel and is slowed down.
False, stays the same
15. T/F:
According to the Doppler effect, light from a star moving away from Earth will have a higher frequency than light from a star moving toward Earth.
False, lower
16. T/F:
When two waves are in the same place at the same time, they combine to produce a single wave.
True
17. T/F:
Two waves cannot occupy the same space at the same time.
False, can
18. T/F:
Nodes in a standing wave are the result of constructive interference.
False, destructive
19. T/F: If two tuning forks of different frequencies are struck at the same, you will hear beats as the result of constructive interference followed by destructive interference.
True
20. T/F:
When light passes from air to glass, the light may change direction due to refraction.
True
21. Sound waves...
require a medium
22. Light waves...
are elecrtomagnetic waves.
23. Water waves...
Transport energy but not water.
24. The medium seismic waves travel through is...
rocks and other maaterials inside Earth.
25. Sound waves are...
longitudinal waves.
26. Light waves are...
longitudinal waves
27. Water waves are...
mechanical waves
28. The wavelength of the wave in the diagram is...
1.5 m
29. The amplitude of the wave in the diagram is...
1m
30. A wave has a period of .25 seconds. The frequency of this wave is...
4 hertz
31. A man is standing on the shore of a beach, up to his knees in water. Every 5 seconds a wave breaks on him. What is the period of the wave?
5 seconds
32. A child is sending pulses down a stretched rope at a rate of 2 pulses per second. The distance between the pulses is 5 meters. What is the speed of the wave?
10 m/s
33. A train of waves is movig at a speed of 30m/s. THe frequency of the waves is 10 Hz. What is the wavelength?
3 m/s
34. A sound wave in air has a frequency of 680 cycles per second. What is the approximate wavelength of the sound wave?
680 m
35. A person is standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s. The frequency of the sound the person hears will...
increase
36. A wavefront is...
a surface made up of all the point on a wave that have the same energy
37. The frequency of a sound wave determines...
the pitch of the sound
38. How loud a sound is depends on...
the amplitude of the waves.
39. The difference beween visible light and X rays is that...
the frequency of X rays is greater.
40. A good mathematical model for representing transverse waves is...
sine curve
41. The color of light is determined by ____ of the light waves.
frequency
42. Which type of electromagnetic wave has the greatest wavelength?
43. The frequency of a sound wave is determined by the...
source of the wave.
44. A wave x meters long has a speed of y meters per second. The frequency of the wave is...
y/x
45. A wave with a frequency of .5 Hz and a speed of 10 m/s has a wavelength of...
20 m
46. A disturbance thata transmits energy through matter or space is...
wave
47. The matter through which a wave travels is called the...
medium
48. A wave that requires a meduim is a...
mechanical wave
49. A ____ consists of changing elecric and magnetic fields and does not require a medium.
electromagnetic wave.
50. A wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels is called a....
Transverse wave
51. The hightest point of a transverse wave is called the...
crest
52. The lowest point of a transverse wave is called the...
trough
53. The ___ is the greatest distance that particles in a medium move from their nromal position when a wave passes.
aplitude
54. The ___ is the time required for one full wavelength to pass a certian point.
period
55. The bending of a wave as it passes an edge or an opening is called...
diffraction
56. The bending of waves as they pass from one medium to another is called...
riffraction
57. When two or more waves exist in the same palce at the same time, ___ occurs.
interfearence
58. In __, waves combine so that the resulting wave is smaller than the largest of the orgional waves.
destructive interfearence
59. In __, waves combine so that the resulting wave is bigger than the largest of the original waves.
consturctive interfearence
60. A __ is a wave form caused by interfearence that appears not to move along the medium and that shows nodes and antinodes.
standing wave
 Author: Anonymous ID: 87221 Card Set: Chapter 14 Updated: 2011-05-22 22:26:57 Tags: Science Folders: Description: Finals Show Answers: