2007-10-23 22:04:16 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
heating air makes the molecules collide more and therefore be further apart. this means warmer air is less dense than cool air. just like Styrofoam floats because its less dense than water, the warm air floats in the cool air.
damn
2007-10-23 22:14:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It is all to do with density - difference between the hot air in the balloon and the cold air that surrounds it. The cool air above the balloon is heavier than the heated air so that if it flows down around the balloon and the balloon rises to replace it, we have succeed in letting the force of gravity bring more of the mass of the air and the earth closer together. Gravity always likes to do this and this is called gravitational potential energy. This potential energy is converted to random motion of air molecules IE heat. The rising of hot air balloon is one example of the fundamental forces of the cosmos.
Hope this helps and have a nice day. ;) x
2007-10-23 22:22:24 · answer #2 · answered by Soup Dragon 6 · 0⤊ 0⤋
Hot air is less dense than cool or cold air. The air in the balloon is heated by a burner causing it to become buoyant allowing the balloon to rise up.
2007-10-23 22:16:55 · answer #3 · answered by bluelf 2 · 0⤊ 0⤋
Hot air rises which gets trapped by the material of the hot air balloon, causing it too rise. Hot air balloons can go down by turning off the source of the hot air which is the flame.
2007-10-23 22:13:04 · answer #4 · answered by witchello@btinternet.com 2 · 0⤊ 0⤋
well, a regular balloon, when filled up with someones breath, is a relatively low temperature compared to a hot air balloon. Hot air balloons also operate at higher altitudes (and temperatures), where the air is thinner and cooler. As you know, heat rises, and pushes on the top of the balloon's fabric, pulling the basket up.
2016-04-10 01:53:17 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Because hot air rises
2007-10-23 22:07:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Hot air is less dense than cooler air.
Cool air is more dense than hot air.
2007-10-23 22:11:00 · answer #7 · answered by don_sv_az 7 · 1⤊ 0⤋
Because its filled with helium and gas from bursts of fire in a little engine thats over the basket that is beneath the balloon that is beneath the basket that is below the engine that is above the basket and lower then the balloon. I hope that helps
2007-10-23 22:13:47 · answer #8 · answered by Indialiesha 1 · 0⤊ 2⤋
How many different ways of saying "hot air rises" can we come up with??
Only 1
HOT AIR RISES =)
2007-10-23 22:09:50 · answer #9 · answered by spick&span 4 · 0⤊ 0⤋
hot air is less dense than cold air....=/
2007-10-23 22:13:41 · answer #10 · answered by azan s 1 · 0⤊ 0⤋