what causes a drum to exco?

i need to know this for science class

2007-06-07 05:23:34 · 1 answers · asked by joy w 1 in Science & Mathematics ➔ Physics

1 answers

It is spelled "echo". Echos are caused when sound waves bounce off of something and come back. We hear the echo because it took a few seconds for the sound to travel then come back.

2007-06-07 05:28:06 · answer #1 · answered by Lady Geologist 7 · 0⤊ 0⤋

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