<P> Thunder is the sound caused by lightning . Depending on the distance and nature of the lightning , thunder can range from a sharp , loud crack to a long , low rumble ( brontide ) . The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning . In turn , this expansion of air creates a sonic shock wave , similar to a sonic boom , which produces the sound of thunder , often referred to as a clap , crack , peal of thunder , or boom . </P>
<P> Thunder is the sound caused by lightning . Depending on the distance and nature of the lightning , thunder can range from a sharp , loud crack to a long , low rumble ( brontide ) . The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning . In turn , this expansion of air creates a sonic shock wave , similar to a sonic boom , which produces the sound of thunder , often referred to as a clap , crack , peal of thunder , or boom . </P>
where does the sound of lightning come from
where does the sound of lightning come from
expansion of air
expansion of air