Thunder and lightning… what’s the reason for all that light and noise? Is there a giant living in the sky who has gone bowling? Or does the giant have a really bad stomach ache? Maybe it’s not a giant up there, but a whole herd of ponies, running around and having fun!
The truth behind thunder and lightning are some special things happening inside a certain type of cloud (cumulonimbus). Within the cloud are tiny, frozen units of water shuffling around and colliding with each other. All of this activity creates a type of natural energy and electricity that is released from the cloud as a big bolt of lightning!
Thunder, believe it or not, is the sound created by lightning! When the hot lightning strikes through the sky, nearby air has to move away quickly to make space for the lightning -- this is what you hear as a big crash of thunder!