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Chapter 16 Sound Voc
Define all of the following terms
| Term | Definition |
|---|---|
| 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 decibel(db) |
| Pitch | A description of how high or low the sound seems to a person |
| Ultrasound | Sound waves with frequencies above the normal human range of hearing. The prefix ultra- means "beyond" |
| Infrasound | Sounds with frequencies below the human range of hearing. The prefix infra- means "below" |
| Larnyx | Your voice box |
| Doppler Effect | The change in frequency of a wave as its source moves in relation to an observer |
| What Causes 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 wave |
| What causes a sonic boom | When a shock wave releases a huge amount of energy. You hear it when the shock wave passes you |
| Fundamental Tone | The lowest natural frequency of an object |
| Overtone | The objects higher natural frequencies |
| Acoustics | The study of how sounds interact with each other and the enviornment |
| Reverberation | In which the echoes of a sound are heard after the sound source stops producing sound waves |
| Ear Canal | It collects sound waves and directs them into a narrow region called the ear canal |
| Ear Drum | a small, tightly stretched, drumlike membrane |
| Cochlea | a fluid-filled cavity shaped like a snail shell |
| Echolocation | is 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 | A device that uses the reflected ultrasound waves to create a picture |
Created by:
EricMscience
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