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It controls the parachute at the top of the balloon. By pulling down on the cord it opens the top, letting hot air out and controlling the decent
it's because of the ratio of the weight of the air in the balloon to the air outside the balloon
the temperature affects the balloon filled with air because if it is too cold it can freeze it, and cause the balloon to pop
They are not! The air inside them is trapped in the balloon and heated, expands, becomes less dense and rises therefore pulling the balloon up with it. If helium was used it would explode! :)
A balloon floats in the air when the molecules inside the balloon are less dense. The gas inside a helium balloon is in essence "lighter" than the air around it, causing a buoyancy effect which makes the balloon float. This can also be seen in hot air balloons when the air molecules are heated by the propane torch and excited, thus creating a less dense environment inside of the balloon compared to outside of the balloon.
It controls the parachute at the top of the balloon. By pulling down on the cord it opens the top, letting hot air out and controlling the decent
If there is warm air in the balloon, cooler air makes the balloon rise and if there is cold air in the balloon warmer air makes the balloon fall.
it's because of the ratio of the weight of the air in the balloon to the air outside the balloon
They have to let out the hot air a little at a time.
When the burner on a hot air balloon is turned on the air inside the balloon is heated making it less dense. This will cause the balloon to be more buoyant and climb.
the temperature affects the balloon filled with air because if it is too cold it can freeze it, and cause the balloon to pop
its effect increases as balloon moves upward
depends on mass and if you include the air. same mass and not including the air they both weigh the same, air just expands the balloon and lowers the effect of gravity.
Kapua, are you asking this
They are not! The air inside them is trapped in the balloon and heated, expands, becomes less dense and rises therefore pulling the balloon up with it. If helium was used it would explode! :)
the color of a balloon is a dark color. but when you put it in the heat, the air in the balloon expands and the color of the balloon gets lighter and pops.
Yes. Without gravity, a hot air balloon would rise infinitely. You could never return to the ground. Balloons tend to hover more or less. The force of the air pushing up on the balloon and the force of gravity pulling down on the balloon are usually very close to one another. This keeps the balloon at a steady height, unless you heat the air in the balloon, or let it cool.