12.2 quiz

1. An electromagnetic wave is caused by a disturbance in

A) heat
B) a field
C) a material medium
D) the atmosphere

2. Which of the following produce(s) the most EM waves on Earth?

A) the high energy of the Sun
B) artificial lights
C) the energy of distant stars
D) a vacuum

3. Radiation is the

A) energy that moves as EM waves
B) conversion of EM waves into kinetic energy
C) motion of a medium caused by EM waves
D) speed of EM waves in a vacuum

4. In a vacuum, the speed of EM waves

A) increases as the amount of energy increases
B) depends on the source of the waves
C) always remains constant
D) decreases as the waves spread out

5. When microwaves encounter water, they

A) are refracted
B) are reflected in many directions
C) convert electromagnetic energy into heat
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) ultraviolet light
B) x-rays
C) radio waves
D) microwaves

7. These EM waves have the highest energy.

A) x-rays
B) radio waves
C) ultraviolet light
D) gamma rays

8. EM waves with frequencies of 1012 Hz or less are considered this type of wave.

A) x-rays
B) ultraviolet light
C) microwaves
D) radio waves

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) ultraviolet light
B) visible light
C) radio waves
D) microwaves

11. Waves from the Sun in this part of the EM spectrum can burn your skin.

A) x-rays
B) ultraviolet light
C) radio waves
D) microwaves

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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