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12.2 quiz
  • 1. An electromagnetic wave is caused by a disturbance in
A) heat
B) the atmosphere
C) a material medium
D) a field
  • 2. Which of the following produce(s) the most EM waves on Earth?
A) the energy of distant stars
B) a vacuum
C) the high energy of the Sun
D) artificial lights
  • 3. Radiation is the
A) speed of EM waves in a vacuum
B) motion of a medium caused by EM waves
C) energy that moves as EM waves
D) conversion of EM waves into kinetic energy
  • 4. In a vacuum, the speed of EM waves
A) depends on the source of the waves
B) always remains constant
C) increases as the amount of energy increases
D) decreases as the waves spread out
  • 5. When microwaves encounter water, they
A) convert electromagnetic energy into heat
B) are reflected in many directions
C) are refracted
D) pass through the water without interacting with it
  • 6. EM waves from this part of the spectrum are used in radar and cell phones.
A) radio waves
B) microwaves
C) ultraviolet light
D) x-rays
  • 7. These EM waves have the highest energy.
A) gamma rays
B) ultraviolet light
C) radio waves
D) x-rays
  • 8. EM waves with frequencies of 1012 Hz or less are considered this type of wave.
A) microwaves
B) ultraviolet light
C) radio waves
D) x-rays
  • 9. This type of EM wave is frequently associated with heat.
A) radio waves
B) microwaves
C) ultraviolet light
D) infrared light
  • 10. The smallest part of the EM spectrum is made up of this type of wave.
A) ultraviolet light
B) microwaves
C) radio waves
D) visible light
  • 11. Waves from the Sun in this part of the EM spectrum can burn your skin.
A) ultraviolet light
B) microwaves
C) radio waves
D) x-rays
  • 12. These EM waves pass through soft tissue but are absorbed by bone.
A) ultraviolet light
B) x-rays
C) microwaves
D) radio waves
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