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9 Cards in this Set
- Front
- Back
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What is sound caused by?
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Sound is caused by vibrating objects.
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How does sound travel?
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It is transferred by waves like light.
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What is a wave?
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A wave is a way of transferring energy from one place to another without transfer of matter.
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How do we hear sound?
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The vibrating object causes the air particles to vibrate causing waves to vibrate against our eardrum.
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How fast does sound travel?
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330m/s This is slower than light
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What affects the pitch of the sound?
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The frequency of vibrations which is the number of waves passing a point in one second (Hertz).
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What affects the volume of a sound?
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The amplitude of vibrations which is the maximum height or displacement of the waves.
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Descirbe the hearing range of humans?
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Humans cannot hear ultrasounds or infrasounds unlike bats and dogs.
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What is an oscilloscope?
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It is an instrument which allows us to see sound waves.
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