Question

heated air inside a hot air balloon causes it to raise into the sky. when the air cools the balloon returns to the ground. when is the hot air balloon behaving like an air mass in a high pressure area or in a low pressure area?

Answer 1

There is pressure on both the in and outsides of the balloon: high inside and low outside, respectively. In terms of air mass, high pressure has greater activity and tends to move upward (balloon rises); whereas low presssure, being slower, descends (balloon descends).