Thunder

[pjm007]

How does thunder make a noise ? Is it to do with low and high pressures ?

Thanks in advance.

[amarillis]

According to Wikipedia:

Thunder is the sound of the shockwave caused when lightning instantly heats the air around it to up to 30 000 �C (54 000 �F). That super-heated air expands rapidly, then contracts as it cools. The rapid expansion / contraction generates sound waves, making the sound that is called "thunder."

Thunder

[gingerflaps]

i thought the noise of thunder was made by the crackle of the lightning, so basically the thunder comes from lightning. thats all i thought anyway

[Dick Cheese]

I thought is was due to trapped wind! 

[smee.tracey]

I always thought it was very hot air meeting cold air - you always get thunder storms after hot weather, then it goes cooler. Am I misinformed? That's what I've told my kids and I want them to be right!!!!!!!