Cool Science - 10/21/13: Echo Tube Exhibit (VIDEO)

By Emma Koch - 21Alive

October 22, 2013 Updated Oct 22, 2013 at 10:24 AM EST

FORT WAYNE, Ind. (21Alive) -- In this week's episode of Cool Science Monday, Martin Fisher from Science Central will talk about the echo tube exhibit.

It’s a long tube, placed against a wall. An echo is when a sound wave is moving in one direction, strikes a hard surface, and changes its direction.

With the exhibit, the echo from a hand clap has a strange sound, with high and low sounds. Shorter waves have a higher sound and move faster. Longer waves have a lower/deeper sound and move slower. So, the shorter, higher sounds move faster and return sooner. Followed by the longer, deeper, slower sounds.

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