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Sound Vocabulary
| Term | Definition |
|---|---|
| Sound | A disturbance that travels through a medium as a longitudinal wave. |
| Echo | A reflected sound wave. |
| Elasticity | The ability of a material to bounce back after being disturbed. |
| Density | How much matter, or mass, there is in a given amount of space, or volume. |
| Loudness | describes your perception of the energy of a sound |
| intensity | the amount of energy a sound wave carries per second through a unit area |
| Decibel (db) | The loudness of different sounds is compared using a unit called the ______ |
| Pitch | description of how high or low the sound seems to a person |
| Ultrasound` | Sound waves with frequencies above the normal human range of hearing |
| Infrasound | sounds with frequencies below the human range of hearing |
| larynx | your voice box |
| Doppler Effect | the change in frequency of a wave as its source moves in relation to an observer |
| Causes of the Doppler effect | when a sound source moves, the frequency of the waves changes because the motion of the source adds to the motion of the waves. |
| causes of the sonic boom | a shock wave forms as the sound waves overlap. the shock wave releases a huge amount of energy. people nearby hear a loud noise called a sonic boom when the shockwave passes by them. |
| Fundamental tone | the lowest natural frequency of an object |
| overtone | the objects highest natural frequencies |
| acoustics | the study of how sounds interact with each other and the environment. |
| reverberation | the echoes of a sound are heard after the sound source stops producing sound waves. |
| ear canal | collects sound waves and moves them down a narrow region in your ear |
| eardrum | a small, tightly stretched, drumlike membrane |
| cochlea | a fluid-filled cavity shaped like a snail shell |
| Echolocation | the use of reflected sound waves to determine distances or to locate objects |
| Sonar | a system that uses reflected sound waves to detect and locate objects underwater |
| sonogram | the device uses the reflected ultrasound waves to create a picture |
Created by:
klarahouck13
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