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3 cards from this section. Quick, good the night before a test.
What happens to sound waves when they move from air to water?
Consider how density affects sound.
Define refraction in your own words.
Think about how light bends too!
What is refraction?
Think about what happens when waves change speed.
True or False: Sound travels faster in gases than in liquids.
Consider why solids are denser than gases!
A sound wave passing from air (speed = 343 m/s) into water (speed = 1482 m/s) strikes the water surface at an angle of 30 degrees. Using Snell’s Law, find the angle of refraction in water.
Remember to convert speeds into indexes of refraction!
Critically evaluate how sound refraction would differ in a situation combining changing temperature, such as sound traveling through hot air to cooler water and its practical implications.
Consider how changes in relative density and temperature interact.
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