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Published byBernard Wilkinson Modified over 6 years ago
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Unit: Sound and Light Lesson 1 “The Nature of Sound” Essential Questions: 1.) What is sound? 2.) What factors affect the speed of sound?
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What is sound? Sound is a disturbance that travels through a medium as a longitudinal wave
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A sound wave begins with a vibration
Sound often travels through air, but it can also move through solids and liquids too Sound waves can bend around objects
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What factors affect the speed of sound?
Temperature Sound travels slower at colder temperatures
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Stiffness Sound travels faster in solids than in liquids and gases
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Density Sound travels slower in denser materials
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