A lack of lift with a constant weight and drag leads to rapid descent. Look for a clear landing area, jettison balast to gain time and distance and hope for the best. Ballooning is not negotiable, What Goes Up, Must Come Down.
blah
the air pressure outside of the balloon decreases.
it runs on propane.
The balloon will crash. The burner keeps it up.
Propane gas is used to fuel the burners that heat the air inside the balloon.A hot air balloon is filled with regular air that's heated by a propane burner. This heated air has a lower density than the air outside the ballon, thus allowing the filled balloon to be buoyant.
If the burner fails or runs out of fuel, the hot air in the balloon (that gives it lift) would cool and the balloon would come down to earth.
It falls out of the sky and you die
it sinks
blah
The balloon expands.
the volume of air inside the balloon increases while the pressure of balloon decreases thus balloon inflates
It too much air is added to a balloon it will burst.
Air inside the balloon is heated. Hot air is less dense than the surrounding air, and thus the balloon rises.
the air pressure outside of the balloon decreases.
When the air is heated inside the balloon, it expands, causing it to be lighter than the surrounding (and presumably) cooler air. One imagines however, that as the air inside the balloon is heated, some air is forced out (due to expansion), thus resulting in a decrease in the entire apparatus' overall mass (not to mention a decrease in mass due to any fuel's having been used to heat the air in the balloon).
A hot air balloon would not work on the moon.
It will fill the balloon and make a oval sphere.