PRE TEST

1. Sound waves are a special kind of wave that can be detected by _______.

a. The human eye

b. The human Ear

c. Electronic Instruments

d. Antennas

2. A sound wave cannot travel through which of the following?

a. Air

b. Water

c. Metal

d. Vacuum

3.A sound wave must travel through a medium; it is called a __________?

a. Mechanical

b. Electromagnetic

c. Electrical

d. Light

4. What do we call the region of a sound wave where the molecules are bunched closer together?

a. Rarefaction

b. Refraction

c. Compression

d. Interference

5. Sound waves are described as __________?

a. Mechanical waves

b. Electromagnetic Waves

c. A and B are correct

d. A and B are incorrect​