In Insects

Name an insect which makes high pitched sounds creating almost 1000 sound waves per second?

Cicada
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In Science

What is the pitch in the relation to sound waves?

Sound is a compression or rarefication of air. That compression is measured in frequency (Hertz) or cycles per sec . 440 Hertz is A or "Concert Pitch"

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What animals make high pitch sounds?

toothed whales (dolphins etc) that echo-locate and bats thats echo-locate. Mice are pretty high pitched but not as high as the echo-locators.

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