A hot air balloon flies because it is filled with hot air. Hot air rises and causes the balloon to lift from the ground.
no, hot air air is used
Big enough to allow the hot air to create lift.
because hot air rises
Hot air is less dense then the surrounding air, meaning it's lighter then regular air, allowing it to naturally lift. If something catches that lifting air, and the air is so light that it can lift the required weight up, then it will lift. That's why a hot air balloon requires hot air to lift.
A hot air balloon flies because it is filled with hot air. Hot air rises and causes the balloon to lift from the ground.
A hot air balloon flies because it is filled with hot air. Hot air rises and causes the balloon to lift from the ground.
no, hot air air is used
Big enough to allow the hot air to create lift.
No set answer to that, it depends on how much the balloon has to lift.
The burners on a hot air balloon create hot air, which rises into the balloon and displaces the cooler air from the balloon. Then the hot air, being less dense, will lift the balloon as the cooler surrounding air sinks below it. Once the air cools, the balloon will lose its lift and settle back to the ground. The hot air is only slightly less dense, so it requires a lot of volume to lift the comparatively smaller mass of the balloon and gondola.
because hot air rises
Hot air is less dense then the surrounding air, meaning it's lighter then regular air, allowing it to naturally lift. If something catches that lifting air, and the air is so light that it can lift the required weight up, then it will lift. That's why a hot air balloon requires hot air to lift.
A hot air balloon comes down when less lift is provided by reducing balloon air temperature to control descent.
An envelope is the bag in which the hot air is trapped ito to give the balloon lift.
If you mean hot air balloon then it floats because hot air rises because it is less dense and with enough hot air caught in the balloon it can lift create enough lift to take off into the air. If you mean a helium balloon then it rises because helium in the balloon is less dense then the air around it. Since less dense things rise to the top the balloon will float.
Relatively hot air balloon are pretty light, and they have a very large balloon which is filled with hot air, which naturally rises, and if you contain enough of it it is enough to lift the balloon.