| A | B |
|---|
| Loudness | Your perception of the amount of sound energy reaching your ear. |
| Pitch | a measure how high or low a sound is. |
| Speed of Sound | the speed at which a sound wave travels through a given material. |
| Echo | a sound reflection. |
| Sonic Boom | a shock wave of compressed sound waves produced by an object moving faster than sound. |
| Loudness depends on | how far the vibrating object is moving as is goes back and forth and the amplitude of the sound wave. |
| Pitch depends on | how fast the source of the sound is vibrating. |
| Pitch can be changed by changing | by changing its wavelength and by changing the thickness of the material that vibrates |
| The speed of sound in air is | 340 meters per second |
| Sound waves can | travel at different speeds in different material, travel fastest through hard, solid materials and sound vaves reflect off objects in their paths. |
