What is emission?

Emission is when something sends out stuff, like when you blow bubbles and they float away.

Imagine you have a bottle full of soda, and it’s sealed tight. When you shake it up, the carbon dioxide inside gets all excited and wants to escape. When you open the bottle, whoosh, gas goes flying out. That’s like emission: something that was trapped is now going out into the world.

Think of emission as a bubble factory. Inside the bottle is a bubble-maker (like carbon dioxide), and when it gets loose, it makes bubbles that pop out, just like emissions from cars or factories going into the air.

Or think about a kettle: when you heat water on the stove, steam rises, that’s emission too! The hot water sends out steam, which is like a visible form of emission.

So whether it's a bubble, a kettle, or a car, emission is just stuff going from inside to outside, like something letting go and flying free. Emission is when something sends out stuff, like when you blow bubbles and they float away.

Imagine you have a bottle full of soda, and it’s sealed tight. When you shake it up, the carbon dioxide inside gets all excited and wants to escape. When you open the bottle, whoosh, gas goes flying out. That’s like emission: something that was trapped is now going out into the world.