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