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4 cards from this section. Quick, good the night before a test.
What is sound produced by?
Think about strings or drums.
Name one medium through which sound can travel.
What do we breathe?
What is the unit of frequency?
Think about how many times an object vibrates.
True or False: Sound can travel in a vacuum.
Remember how sound needs air to reach your ears.
A tuning fork vibrates at a frequency of 440 Hz. How many times will it vibrate in 5 seconds?
Multiply the frequency by the time.
A sound wave has an amplitude of 4 units. If the amplitude is doubled, what happens to the loudness?
Consider how changing the amplitude affects sound perception.
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