When warm air rises, bubbles of gases dissolved in liquids such as water or soda can also rise to the surface. This is because warm air is less dense than cool air and can carry lighter objects, like bubbles, upwards.
The cool air will sink and the warm air will rise.
Mostly get hot and rise.
Moist air will rise faster than dry air because it is less dense. The moisture in the air creates buoyancy, resulting in quicker upward movement. Dry air, being denser, will rise more slowly.
Hot air balloons are typically powered by propane gas, which is a hydrocarbon made of carbon (C) and hydrogen (H) atoms. As the propane is burned, it releases heat that causes the air inside the balloon to become less dense than the surrounding cooler air, making the balloon rise.
it can rise because of the helium and the gases help make it rise to the sky
to make a hot air balloon rise you use hot air
Hot air has less mass which make it less dense, thus allowing it to rise over a cold air mass.
yeast
To make a balloon rise in the air, one way is to fill it with a lighter-than-air gas, such as helium or hydrogen. The gas inside the balloon is less dense than the surrounding air, enabling it to float and rise. The amount of gas and the size of the balloon will determine how high it can rise.
There are many chemicals found in a hot air balloon to make it rise. The main elements/chemicals are Helium and Hydrogen.
because the air becomes less dense and spreads out so becomes hotter and hot air rise so the balloon does.
The 4 lifting mechanisms that make air rise are orographic lifting (when air is forced upward by a mountain or slope), frontal lifting (when warmer, less dense air is forced over cooler, denser air), convergence lifting (when air flows together and is forced to rise) and convectional lifting (when air is heated and rises due to its reduced density).
A balloon needs hot air to make it rise because hot air is less dense than cold air. When the air inside the balloon is heated, it becomes lighter and causes the balloon to lift off the ground and float in the air.
you add air with rock Air +Rock
Simple...hot air rises..
You leave it to make it rise, or make it double in size.