| A | B |
|---|
| sound waves are caused by | vibrations |
| all sound waves need a __ to travel | medium |
| outer, middle, inner | parts of the ear |
| A sounds pitch is related to | frequency |
| frequency is to hertz as decibels is to | loudness |
| using reflected sound to find objects | echolocation |
| combination of two or more sound waves into a single wave | interference |
| frequencies at which standing waves are made | resonant frequencies |
| musical instrument families | string, wind, wood |
| noise | a random mix of frequencies |
| region of high density air particles | compression |
| region of low density air particles | rarefaction |
