Hot air rises
A hot air balloon rises because when hot air is added it is intended to rise and when the hot air balloons wants to land, hot air is decreased.
yes honey, that's why hot air balloons rise
Hot air is lighter than cold air, so cold air sinks and hot air rises; that makes the hot air balloon rise (if the air around the hot air balloon is heated as well, it won't rise, or sink if in the air).
yes
hot-air balloons and birds in flight.
In general, hot means the substance is less dense. Less dense things tend to rise when they are in more dense things.
Fire makes things rise as it is a very strong source of heat. So does hot air. Fire causes hot air and because hot air is lighter than cold air, it rises. Is that good? (my first answer X3)
Heat is the energy of the hot air. Therefore hot air rises
Hot gases expand and therefore are less dense than cold gases, and therefore hot gas has buoyancy and will rise, much as air bubbles float to the surface in water.
clouds
Cold will sink to the bottom. Hot water will rise to the top.
Neither, heat is a form of energy and as such is contained within matter or exists as radiation. Heat energy and hot matter are very different things. In a fluid, hot matter will rise because it expands and hence decreases in density.
Hot air rises
A hot air balloon rises because when hot air is added it is intended to rise and when the hot air balloons wants to land, hot air is decreased.
i
yes honey, that's why hot air balloons rise