Sound is a form of energy that is transferred by pressure waves
in air or through other materials. These waves can be picked up
by the ear, which is how we hear sounds. But there are many
sounds around us that our ears do not pick up, and so we do
not hear them.
in air or through other materials. These waves can be picked up
by the ear, which is how we hear sounds. But there are many
sounds around us that our ears do not pick up, and so we do
not hear them.
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