The upthrust on the balloon is greater than the weight of the balloon. Thus, it rises upwards.
The upthrust on the balloon is greater than the weight of the balloon because the air inside it has a lower density than the surrounding air.
Helium. It is lighter than air and provides buoyancy, causing the balloon to rise.
A balloon filled with a gas will rise or sink depending on the density of the gas inside compared to the surrounding air. If the gas inside is less dense than the surrounding air, the balloon will rise. If the gas inside is more dense, the balloon will sink.
Heating the air in the balloon makes it less dense than the surrounding air, causing the balloon to become buoyant and rise. As the air inside the balloon cools, it becomes denser and the balloon descends. This process allows the pilot to control the altitude of the balloon.
A balloon needs hot air to make it rise because hot air is less dense than cold air. When the air inside the balloon is heated, it becomes lighter and causes the balloon to lift off the ground and float in the air.
The upthrust exerted by surrounding air on the balloon.
A hot air balloon would not work on the moon.
get a bag and jump off a cliff
the Montgolfier brothers
it took about a year for the first hot air balloon to be made.
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You would hear the intermittent sound of the gas jet used to reheat the air in the balloon.
A hot air balloon goes up because the air inside the balloon is heated, which makes it less dense than the surrounding cooler air. This creates a buoyant force that causes the balloon to rise. The pilot controls the altitude by adjusting the temperature of the air inside the balloon.
Helium. It is lighter than air and provides buoyancy, causing the balloon to rise.
with out the hot air the balloon would not rise
To make a balloon rise in the air, one way is to fill it with a lighter-than-air gas, such as helium or hydrogen. The gas inside the balloon is less dense than the surrounding air, enabling it to float and rise. The amount of gas and the size of the balloon will determine how high it can rise.
There are many chemicals found in a hot air balloon to make it rise. The main elements/chemicals are Helium and Hydrogen.
Helium. The helium gas in the balloon is lighter than the air outside the balloon.