| A | B |
|---|
| Vibration | the complete back-and-forth motion of an object |
| Compression | a region of higher density and pressure in a longitudinal wave |
| Rarefaction | a region of lower density and pressure in a longitudinal wave |
| Wave | a disturbance that transmits energy through matter or space |
| Longitudinal Waves | type of mechanical wave that consists of compressions and rarefactions |
| Medium | a substance through which a wave can travel |
| Cochlea | portion of the ear that contains liquid |
| Pinna | part of the ear that sticks out from the head |
| Ear Canal | part of the ear wear ear where wax accumulates |
| Hammer | bone that makes the anvil and stirrup vibrate |
| Anvil | bone in the middle eat connected to the stirrup |
| Stirrup | bone at the entrance to the inner ear |
| Eardrum | vibrating part of the ear that causes the three small bones to vibrate |
| Outer Ear | part of the ear that acts as a funnel to direct the sound waves into the middle ear |
| Middle Ear | part of the ear where amplitude of sound vibration is increased |
| Inner Ear | part of the ear where vibrations created by sound are changed into electrical signals for the brain to interpret |
| Tinnitus | one of the most common types of hearing loss resulting from long-term exposure to loud sounds |
| Vacuum | sound cannot travel in this |
| All | sound waves travel in this direction |
