| A | B |
|---|
| amplitude | amount of energy in a sound wave |
| decibel | unit used to measure the loudness of sound |
| eardrum | thin tissue between the ear canal and the middle ear |
| echo | reflected sound |
| noise pollution | any sound that causes problems for people |
| pitch | how high or low a sound is |
| sound wave | vibration that carries sound energy through matter |
| vibrate | to move back and forth rapidly |
| vocal cords | folds of thin muscle tissue in the throat |
| volume | how loud or soft a sound is |
| Sound is a kind of energy made by what? | vibrating objects |
| wavelength | the distance from one compressions to the next in a sound wave. |
| solids | sound waves travel fastest in. |
| middle ear | tiny bones that pass along the vibrations in the ear |
| wind instruments | trumpets, clarinets, flutes, instruments you blow into |
| echolocation | sounds bouncing off of an object to create an echo |
| sonic boom | An airplane flying faster than the speed of sound makes what? |
| sound waves | travel in all directions from the vibrating object |
| long wavelength | A low pitched sound has what? |
| Making a pitch higher | tightening a guiter string creates what? |
