Ch.12.less.2.what are the properties of sound(2)
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Transcript of Ch.12.less.2.what are the properties of sound(2)
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What are the properties of
sound?Chapter 12: Lesson 2:
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Play a guitar.
What do you hear?
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Is a type of energy we hear.
Sound
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Moves quickly back and forth.
Vibrates
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Compression
Rarefaction
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Sound Waves
Vibrations that move through matter
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Direction of sound
Direction of energy
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Sound waves moves in the same direction the energy is
moving in.
Longitudinal Waves
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Waves that move in a different direction.
Transverse Waves
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Sounds travel through 3 media.
- Sound travels through the solid the fastest(energy passed through closely packed particles)
- Sound travels through the gases the slowest.
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When you are TALKING the sound waves will look like this
When you are SCREAMING the sound waves will look like this
When you are WHISPERING the sound waves will look like this
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Amplitude
How dense is the air during compressions and rarefactions.
Units:Decibels (dB)