Hot air baloons

Question 1

Imagine that you are one of the high flyers pilots of a hot air balloon. As your flying, the temperature outside starts to increase. What do you need to do to keep the balloon aloft?

Answer 1

You must add heat. Adding he would reduce air density and make the air lighter than around the balloon.

Question 2

What would you do if you wanted to:
A. Descend into the river valley
B. Rise over a power line

Answer 2

A. Lower heat.
B. Add heat

Question 3

A hot air balloon is approaching power lines and may hit the lines. How can this be corrected?

Answer 3

Add heat so you rise over the power line.