12.2 quiz

1. An electromagnetic wave is caused by a disturbance in

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

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

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

3. Radiation is the

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

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

7. These EM waves have the highest energy.

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

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

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

9. This type of EM wave is frequently associated with heat.

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

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) 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) ultraviolet light
C) radio waves
D) microwaves

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