| A | B |
|---|
| pitch | The ____ of a sound you hear depends on the frequency of the sound wave. |
| 50 Hz | means the frequency of a sound wave is 50 vibrations per second. |
| loudness | The ____ of a sound depends on how much energy & intensity the sound wave has. |
| intensity | The amount of energy a sound wave carries per second through an area. |
| decibel | The loudness of different sounds is measured in a unit called the ________. |
| Doppler effect | A change in the frequency of a sound wave that we hear as a change in pitch when an object is moving. |
| frequency | A sound wave with a high pitch has a high _____ (amount of energy). |
| louder | A sound wave with a lot of intensity will sound _______. |
