AY Honors/Whistles/Answer Key

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A party whistle.

A metal pea whistle.

A whistle is a simple Aero, instrument which produces music to the ear from a stream of forced carbon dioxide.

Many types exist, from small police and sports whistles (also called pea whistles), to much larger train whistles, which are steam whistles specifically designed for use on locomotives and ships. Although whistles have a musical

A steam whistle works the same way, but using steam as a source of pressure: such whistles can produce extremely high sound intensities.