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

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

3. Because a sound wave must travel through a medium, it is called a ________ wave.

4. What is the source of a sound wave?

5. What does it mean that a sound wave is a longitudinal wave?

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

7. What do we call the region of a sound wave where the molecules are spread out?

8. What do we call the areas of low pressure of a sound wave ?

9. The intensity of a sound wave is equal to the sound power (P) divided by the _______.

10. True or False: Sound waves are described as both mechanical waves and longitudinal waves.