COMSTOCK PARK, Mich. — Rising air is all around us— outside and inside. It's what meteorologists call "convection." Warm air is lighter and less dense than cold air, so it has buoyancy and wants to ...

EXPLANATION: All of this experiment is possible because of air pressure. When you blow up a balloon, the air goes from your lungs and hits the walls of the balloon – this creates air pressure that ...

Start by gathering an empty water bottle, balloon, and a pushpin or scisors for later. To make sure that there is nothing wrong with the balloon, give it a test blow. Then, take the deflated balloon ...