hot air rises because molecules of air move quicker
The reason air rises is tempurture not dryness but as long as it is warm sure :)
You can use air instead of helium, but it will not rise. The reason helium balloons rise is because helium is lighter than air. I am sure other gases can be used also.
For the same reason that it happens in other fluids. The hot air (in this case) has a tendency to rise, and colder air, to sink, due to differences in density.
Because hot air rises and cool air sinks. the reason why is because hot air is less dense than cool air so the cooler air will sink
the reason is that the kite would not get any air to help it rise up
Heat can cause air to rise :)
Farts rise in the air because they are lighter than the surrounding air.
A hot air balloon is lighter than air because the air inside the balloon is heated, which causes it to become less dense than the surrounding air. This buoyant force allows the balloon to float in the air.
The helium balloon rises in air because the density of helium inside the balloon is less than that of the surrounded air that is displaced by the balloons volume. So the balloon is lighter than the surrounding air. Ice cubes float in a glass of liquid water for the same reason.
Buoyant air will rise until it reaches warmer air that is the same density as itself.
the reason for the rise of feudalism was that a fisher ate a beach
It is the warm air