Electromagnetic Radiation Study Guide

Choose the best answer. Some statements may have more than one correct answer.

  1. The transfer of energy by electromagnetic wave is called ______.
  2. Modulation
  3. Radiation
  4. Infrared radiation has a wavelength slightly longer than ______.
  5. Microwaves
  6. Visible light
  7. ______can be used for cooking.
  8. Microwaves
  9. Infrared
  10. ______radiation has a higher frequency than visible light.
  11. Ultraviolet
  12. Infrared
  13. Photons are tiny bundles of radiation that have no ______.
  14. Mass
  15. Energy
  16. Objects containing heat can emit ______.
  17. X rays
  18. Infrared radiation
  19. ______have the lowest photon energy.
  20. Radio waves
  21. Gamma rays
  22. Radio waves are radiation with very long ______and very low frequencies.
  23. Wavelengths
  24. Photons
  25. ______have the highest frequency of all electromagnetic radiation.
  26. X rays
  27. Gamma rays
  28. Electromagnetic waves are classified according to their wavelengths on the electromagnetic ______.
  29. Photon
  30. Spectrum
  31. ______Can be used to check for broken bones.
  32. X-rays
  33. Infrared rays
  34. Ozone in Earth’s atmosphere blocks most of the sun’s______.
  35. Ultraviolet rays
  36. Infrared rays
  37. Visible radiation is the only part of the electromagnetic spectrum you can ______.
  38. See
  39. Feel
  40. Information can be impressed upon a radio wave by a process called ______.
  41. Radiation
  42. Modulation
  43. ______are a subset of radio waves with the highest frequency and energy.
  44. Gamma rays
  45. Microwaves
  46. The wavelength of an electromagnetic wave is ______.
  47. Directly proportional to its frequency
  48. Inversely proportional to its velocity
  49. Inversely proportional to its freqyency
  50. Directly proportional to its energy
  51. In a vacuum, all electromagnetic waves have ______.
  52. The same frequency
  53. The same velocity
  54. The same wavelength
  55. The same energy
  56. Al electromagnetic radiation in the optical portion of the electromagnetic spectrum ______.
  57. Is visible
  58. Has the same wavelength
  59. Has the same frequency
  60. Penetrates the earth’s atmosphere.
  61. Compared to the photons of violet light, the photons of red light ______.
  62. Have more energy
  63. Have less energy
  64. Have equal energy
  65. Have a longer wavelength
  66. Compared to radio waves, microwaves have ______.
  67. Shorter wavelengths
  68. Photons with more energy
  69. Higher frequencies
  70. Lower frequencies
  71. Compared to gamma rays, X rays have ______.
  72. Longer wavelengths
  73. Higher frequencies
  74. Photons with more energy
  75. Lower frequencies
  76. We perceive infrared waves as _____.
  77. Visible Light
  78. Warmth
  79. Smell
  80. Coldness
  81. All objects emit
  82. Gamma rays
  83. Light
  84. Electromagnetic waves
  85. Arrange the regions of the EM spectrum in order of increasing energy.
  86. Which regions of the EM spectrum are completely absorbed by the atmosphere
  87. Why would we place a optical telescope in space?
  88. Why do we place gamma and x-ray telescopes in space?
  89. Which region of the EM spectrum is responsible for most communication?
  1. Sound waves from a radio generally travel in which medium?

a)Air

b)Earth

c)Light

d)Water

  1. The speed of a sound wave

a)Depends on wavelength

b)Depends on the medium

c)Depends on amplitude

d)None of the above

  1. Longitudinal waves travel quickly in a ______because the molecules are closely packed and physically bonded together.

a)Liquid

b)Gas

c)Solid

d)Plasma

  1. Light waves

a)Require a medium.

b)Cannot travel through solids.

c)Cannot travel through liquids.

d)Are electromagnetic waves.

  1. Light waves are

a)Transverse waves.

b)Longitudinal waves.

c)Rotating waves.

d)Circular waves.

  1. The color of light is determined by the ______of the light waves.

a)Medium

b)Speed

c)Frequency

d)Amplitude

  1. Which type of electromagnetic waves has the highest energy?

a)Gamma rays

b)Ultraviolet rays

c)Infrared

d)Microwaves

  1. Which type of electromagnetic radiation is used to kill cancer cells?

a)Microwaves

b)Gamma rays

c)Ultraviolet rays

d)Sunlight

  1. Radar works by sending a signal out from an air-traffic control tower that is

a)Analyzed by a Doppler scanner on the ground.

b)Reflected off a plane back to the control tower.

c)Increased in intensity as it passes through the atmosphere.

d)Scanned and analyzed by a receiver on board an airplane.

  1. Light demonstrates wave characteristics when it is

a)Reflected.

b)Refracted.

c)Diffracted.

d)All of the above.

  1. Light demonstrates particle characteristics when it

a)Knocks electrons off a metal surface.

b)Passes through a narrow opening.

c)Forms standing waves.

d)All of the above.

  1. As the frequency of light waves increases,

a)The energy increases.

b)The energy decreases.

c)The energy stays the same.

d)The wavelength increases.

  1. The law of reflection says the angle of incidence is ______the angle of reflection.

a)Greater than

b)Less than

c)Equal to

d)None of the above

  1. Light is composed of waves and particles called

a)Electrons.

b)Quarks.

c)Photons.

d)Waves.

  1. The visible spectrum of light from the longest to shortest wavelength is:

a)Violet, indigo, blue, green, yellow, orange, red

b)Infrared, ultraviolet, gamma, x-rays, microwaves

c)Red, orange, yellow, green, blue, indigo, violet

d)Green, orange, red, violet

  1. When the crest of one wave overlap the crests of another wave, this results in

a)Diffraction.

b)Destructive interference.

c)Constructive interference.

d)Resonant frequencies.

  1. An echo is the result of a

a)Reflected sound wave.

b)Diffracted sound wave.

c)Refracted sound wave.

d)Dispersed sound wave.

  1. What happens to a wave when it is refracted?

a)It is bent

b)It is diffracted

c)It is reflected

d)It is radiated

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