Study Guide Chapter 16 and 18
Name: __________________-
Chapter 16
1. You can start a surface wave by
a. pushing and pulling on a spring. b. shaking a rope up and down. c. dropping a pebble in a
pond. d. all of the above
2. What is required for a mechanical wave to occur?
a. a disturbance in matter b. a source of energy c. particles of matter d. all of the above
3. The parts of a longitudinal wave where particles of matter are spread farthest apart are called
a. crests. b. vibrations. c. rarefactions. d. compressions.
4. The lowest parts of a transverse wave is are known as
a. valleys. b. troughs. c. bottoms. d. media.
5. What is an S wave?
a. any transverse wave b. a type of longitudinal wave c. a wave generated by an earthquake d.
two of the above
True or False
Write true if the statement is true or false if the statement is false.
_____ 6. Ocean waves travel deep below the surface of the water.
_____ 7. The medium of a mechanical wave must be a solid or liquid.
1. In a longitudinal wave, amplitude is a measure of
a. how many waves pass a fixed point each second. b. how close together particles of the
medium become. c. how quickly the wave travels a given distance. d. how far apart adjacent
compressions are.
2. If two waves have the same amplitude, the wave with more energy is the wave with the
a. shorter wavelength. b. lower frequency. c. denser medium. d. slower speed.
4. Wave speed is a product of
a. wavelength and frequency. b. wavelength and amplitude. c. frequency and amplitude. d. none
of the above
5. What is the frequency of a wave that has a wavelength of 2 m and a speed of 2 m/s?
a. 4 Hz b. 2 Hz c. 1 Hz d. 1 Hz
3. Light is refracted when it
a. strikes a barrier it cannot pass through. b. spreads around an obstacle such as a wall. c. passes
from air to water at an angle. d. interferes with other waves.
True or False
Write true if the statement is true or false if the statement is false.
_____ 10. A standing wave forms when a wave is refracted.
1. How are transverse and longitudinal waves similar? a. Both require a medium. b. Both are
mechanical waves. c. Both transfer energy by vibrating particles. d. all of the above
2. If two waves have the same frequency and speed, they must also have the same a. height. b.
medium. c. amplitude. d. wavelength.
True or False
Write true if the statement is true or false if the statement is false.
_____ 8. Mechanical waves include ocean waves and electromagnetic waves. _____ 9. You can
start a longitudinal wave by shaking a rope up and down. _____ 10. An earthquake generates
both transverse and longitudinal waves. _____ 11. Ocean waves carry particles of water over
long distances.
_____ 12. Wave amplitude is the only measure of wave size.
Chapter 18
1. All of the following are examples of electromagnetic waves except
a. sound waves. b. microwaves. c. gamma rays. d. infrared light.
2. An electromagnetic wave begins when a(n)
a. atom loses an electron. b. magnet is connected to a battery. c. charged particle vibrates. d.
electron is magnetized.
3. Which of the following waves does not require a medium?
a. ocean waves b. earthquake waves c. sound waves d. radio waves
4. Most of the electromagnetic radiation on Earth comes from
a. the sun. b. radio towers. c. X ray machines. d. microwave ovens.
5. Uses of electromagnetic radiation include
a. cooking. b. communications. c. medicine. d. all of the above
1. How long does it take electromagnetic radiation to reach Earth from the sun?
a. 1 second b. 7.5 seconds c. 8 minutes d. 93 minutes
2. What happens to light when it passes from water to air?
a. Its speed decreases. b. Its frequency increases. c. Its wavelength decreases. d. none of the
above
a. 0.5m b. 1.0m c. 1.5m d. 2.0m
4. Electromagnetic waves with the lowest frequencies may have wavelengths as long as
a. many kilometers. b. a few meters. c. a couple of centimeters. d. a fraction of a millimeter.
1. Which electromagnetic waves are used for cell phone signals?
a. X rays b. microwaves c. gamma rays d. none of the above
3. Electromagnetic waves that have the least amount of energy are
a. radio waves. b. infrared light. c. visible light. d. ultraviolet light.
True or False
Write true if the statement is true or false if the statement is false.
_____ 6. Ultraviolet light has shorter wavelengths than visible light.
_____ 10. X rays cannot pass through lead.
1. What do microwaves and waves in a rope have in common?
a. Both are mechanical waves. b. Both are transverse waves. c. Both travel only through matter.
d. two of the above
True or False
Write true if the statement is true or false if the statement is false.
_____ 10. The most important source of electromagnetic radiation on Earth is the sun.
_____ 11. The speed of an electromagnetic wave is a product of its wavelength and frequency.
_____ 12. An electromagnetic wave with a higher frequency has a longer wavelength.
_____ 13. The speed of light across space is 3.0 × 108 meters per second.
_____ 16. The color of visible light depends on its wavelength.
______23. FM radio broadcasts encode sound by changing the frequency of radio waves.
24. Light with the longest wavelengths is classified as __________ light.
a. frequency
b. gamma rays
c. infrared