Question

why do hot air balloons rise​

Answer 1

Answer:

due to the warmth air is lighter then the colder air so the hot air pulls the balloons upward

Answer 2

Question- Why do hot air balloons rise up?

Answer- This is so because the hot air present inside the hot air balloons is lighter than the cool air present in the outside surrounding of the hot air balloon. As the hot air is lighter it rises up and the hot air balloon also rise up.