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chapter 16 sound
terms and definition
Term | Definition |
---|---|
echo | when a sound wave is reflected |
Elasticity | material that can be bounce back after being disturbed |
Density | how much matter or mass an object has |
Loudness | the perception energy of a sound |
Intensity | the amount of energy a sound wave has or carries per second through a unit area |
Decibel (db) | comparing the loudness of different sound in units |
Pitch | description on how high or how low a note is |
ultrasound | sound waves that humans cant hear with the human range |
infrasound | sound that have frequencies below the human range of hearing |
Larnyx | is were your vocal cords are located |
Doppler Effect | change in frequency of a wave as the source moves in relation to an observer |
What causes the doppler effect | it is cause when a high pitch sound is heard from two places |
What causes a sonic boom | when a shock wave releases a huge amount of energy. people nearby hear a loud noise that is a sonic boom and that is how a sonic boom is caused |
Fundamental Tone | lowest natural frequency of an object. |
overtone | objects higher natural frequency |
Acoustics | study of how sound interacts with each other and its environment |
Reverberation | when sound reflects back and forth off a hard surfaces |
Ear Canal | narrow region |
Ear Drum | small tightly stretched drum like membrane |
Cochlea | fluid filled cavity that has the shape of a snail shell |
Echolocation | use of reflected sound wave that determine distance to locate objects |
Sonar | system that uses reflected sound waves to dectect objects under water |
Sonogram | uses ultra sound waves to creat an image |