1. Which of the following is true for sound waves?

a. They require a medium.

b.They cannot travel through liquids

c.They are unrelated to vibrations.
d. They can travel in a vacuum

2. How do electromagnetic and mechanical waves compare?

a. Mechanical waves can only travel through a vacuum, but electromagnetic waves can travel
through a solid, liquid, or gas.

b. Mechanical waves can travel through a solid, liquid, or gas, but electromagnetic waves can only
travel through a gas.

c. Mechanical waves can only travel through a solid, liquid, or gas, but electromagnetic waves can
travel through a vacuum.

d. Mechanical waves can travel through a solid, liquid, or gas, but electromagnetic waves can only
travel through a solid.

3. What do radio waves, microwaves, X-rays, and gamma rays all have in common?

a. They all have the same wavelength.

b. They are electromagnetic waves.

c. They are detected in the same way.
d. They store the same amount of energy.

4. A wave carries...?

a) energy only
b. matter only
c. energy and matter
d. neither

5. A student asks a series of questions about a wave. The answer to which question will allow the
student to determine whether the wave is electromagnetic or mechanical?

a. Does it require a medium in order to travel?

b. Can it pass through air and water?

c. Does it have a measurable speed?

d. Does it have a measurable frequency?