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Sound Test
Sound Unit
| Term | Definition |
|---|---|
| Sound is caused by | vibrations |
| Medium | any material through which a wave travels (solid, liquid, gas) |
| Sound can not travel through | a vacuum |
| Intensity | the amount of energy in a sound, or loudness |
| Pitch | how low or high a sound is |
| Echo | a reflected sound wave |
| Reverberation | repeated echoes of sound |
| crest | highest point of a wave |
| trough | lowest point of a wave |
| wavelength | the distance between two crests or two troughs |
| frequency | how many wavelengths pass a fixed point each second |
| amplitude | height of a wave |
| rest positon | describes a wave at rest, not passing on energy |
| ultrasonic waves | sound waves that have frequencies above the human range of hearing |
| Sound will travel fastest through a | solid - steel |
| Sound waves can be absorbed by materials such as | carpet, curtains, foam |
| Sound waves can be reflected by materials such as | bare walls, caves, mountain tops |
| compressions | dense regions of sound waves where molecules push together |
| rarefactions | less dense regions of sound waves where molecules spread apart |
| Sonar | used by ships and submarines - a system that uses reflected sound waves to detect and locate objects underwater |
| Echolocation | the use of reflected sound waves to determine distances or to locate objects |
| Sonar and Echolocation | use ultrasonic sound waves to detect objects or prey |
| hammer, anvil, stirrup | amplify sound |
| cochlea | has nerve fibers that vibrate to pick up different pitches |
| auditory nerve | sends electrical impulses to the brain for interpretation |
| Eustachian tube | helps drain fluid from the middle ear |
| Hearing Aid | electronic device worn to amplify sound |
| Cochlear Implant | surgically implanted device that sends electrical impulses to the auditory nerve |
Created by:
cbeltrani
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