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