2007-10-14 07:28:56 · 6 answers · asked by Rafael G 2 in Science & Mathematics ➔ Physics
hot air rises
2007-10-14 07:32:00 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Aerodynamics. The air is moving over the top of the paper faster than it is over the bottom, this creates a low pressure area along the top of the paper, the higher pressure on the bottom part causes the paper to lift.
2007-10-14 14:33:38 · answer #2 · answered by johnandeileen2000 7 · 0⤊ 0⤋
The bernouli effect! Moving air has less air pressure than still air. The air you are blowing over the top of the paper has less pressure than the air beneath, so the air beneath pushes it up.
This is the same principle that makes an airplane wing work. The top of the wing is curved but the bottom is straight. The air going over the top of the wing has to go faster, so it has less pressure, which causes 'lift'.
2007-10-14 14:32:29 · answer #3 · answered by Anonymous · 1⤊ 0⤋
This is an example of Bernoulli's principle at work. The faster moving air above the sheet has a lower sideward pressure than the air below it. There is a popular misconception that Bernoulli's principle explains how airplanes fly, but it is not correct: have you ever seen an airplane fly upside down?
2007-10-14 14:33:54 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Because faster moving air creates lower atmospheric pressure, the same phenomenon that causes airplane wings to lift.
2007-10-14 14:33:44 · answer #5 · answered by morris 5 · 0⤊ 0⤋
Rafe-dude, Cuz the paper gets excited, Hello?
2007-10-14 14:32:42 · answer #6 · answered by "Johns" 7 · 0⤊ 0⤋