12.2 quiz

1. An electromagnetic wave is caused by a disturbance in

A) the atmosphere
B) a field
C) heat
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) artificial lights
C) a vacuum
D) the energy of distant stars

3. Radiation is the

A) conversion of EM waves into kinetic energy
B) energy that moves as EM waves
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) always remains constant
B) increases as the amount of energy increases
C) decreases as the waves spread out
D) depends on the source of the waves

5. When microwaves encounter water, they

A) pass through the water without interacting with it
B) are refracted
C) convert electromagnetic energy into heat
D) are reflected in many directions

6. EM waves from this part of the spectrum are used in radar and cell phones.

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

7. These EM waves have the highest energy.

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

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

10. The smallest part of the EM spectrum is made up of this type of wave.

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

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

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