Question

Why does heating up the air cause air to rise

Answer 1

When air gets heated up, the particles get lots of energy. This means that pressure is not able to keep the bouncy particles down any more. The energy filled particles rise high in the air.

Answer 2

Answer: Because no matter what, hest always rises.

Explanation: For example, if you have a whole jar of air that you are heating up, the bottom of it will heat and then you will see the steam from it being heated coming out of the top of the container. The heated air moved up from the bottom of the container after it was heated. There is a whole extra part to this that includes density but I'm trying to make it simple.