Down
| 1. | Sound usually travels the slowest in this state of matter. |
| 2. | The form in which sound energy moves from one place to another. |
| 3. | Light waves travel ___ than sound waves. |
| 4. | An explosive sound wave that is created when an airplane flies at a speed that is faster than the speed of sound. (2 words - include space in puzzle) |
| 5. | Sound waves travel ___ than light waves. |
| 6. | Sound usually travels the fastest in this state of matter. |
| 7. | The speed of sound is the speed that a sound ____ travels through a given material. |
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Across
| 8. | Sound waves can only travel through this. |
| 9. | Sound waves cannot travel through empty ____. |
| 10. | The ____ of a sound wave changes based on the matter the sound wave is traveling through. |
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