science behind hot air ballon?
a short paragraph for grade 6
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hot air balloon is flight by helium gas ...
the science behind it is that the hot air always goes up...in the sky and the colder get down.... A hot air balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket, which carries passengers and a source of heat, in most cases an open flame caused by burning liquid propane.
Hot air balloons work because hot airrises. By heating the air inside theballoon with the burner, it becomes lighter than the cooler air on the outside. This causes the balloon to float upwards, as if it were in water. Obviously, if the air is allowed to cools, the balloon begins to slowly come down.
Hot air balloons are based on avery basic scientific principle: warmer air rises in cooler air. Essentially, hot air is lighter than cool air, because it has less mass per unit of volume. ... Therefore, each cubic foot of air contained in a hot air balloon can lift about 7 grams.
thx
the science behind it is that the hot air always goes up...in the sky and the colder get down.... A hot air balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket, which carries passengers and a source of heat, in most cases an open flame caused by burning liquid propane.
Hot air balloons work because hot airrises. By heating the air inside theballoon with the burner, it becomes lighter than the cooler air on the outside. This causes the balloon to float upwards, as if it were in water. Obviously, if the air is allowed to cools, the balloon begins to slowly come down.
Hot air balloons are based on avery basic scientific principle: warmer air rises in cooler air. Essentially, hot air is lighter than cool air, because it has less mass per unit of volume. ... Therefore, each cubic foot of air contained in a hot air balloon can lift about 7 grams.
thx
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