What Initiates Lightning?

When lightning happens, it starts because air gets super hot and creates a special path for electricity to travel.

Imagine you're playing with a slide at a park, you start at the top, and then whoosh, you go all the way down. Now imagine that slide is made of clouds instead of metal, and you’re not just sliding, you're creating a really fast road for energy to zoom from one cloud to another or even to the ground.

When clouds rub together up in the sky, they make electricity, like when you walk across a carpet and then touch a doorknob, zap! That electricity builds up inside the clouds until it's so strong that it needs to find a way out. The air around it gets super hot, as hot as 50,000 degrees Celsius! That heat makes a path for the lightning to follow.

Sometimes the lightning goes from one cloud to another, and sometimes it hits the ground. Either way, that path of electricity we see is the lightning, like a super-fast slide made of light and energy.