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