Hot air balloons use hot air because hot air rises above cold air. The air inside the balloon is heated above the temperature of the air outside the balloon. The warmer air trapped inside the balloon then causes the balloon to float above the outside colder air.
The volume of air increases on its heating hence the balloon rises on heating
-- Inflate the balloon with some substance that is less dense than air. OR -- Inflate the balloon with air, then heat it after it is sealed.
Hot air is lighter than cold air, so cold air sinks and hot air rises; that makes the hot air balloon rise (if the air around the hot air balloon is heated as well, it won't rise, or sink if in the air).
A Balloon needs hot air to rise, the flame, which is gas burning, heats up the air in the balloon. As Hot air rises above cooler air the balloon takes off.
because the air becomes less dense and spreads out so becomes hotter and hot air rise so the balloon does.
Hot air is less dense compared to cold air. The heated air in the balloon will rise, making the balloon float in the air.to make it rise.
to make a hot air balloon rise you use hot air
The volume of air increases on its heating hence the balloon rises on heating
Simple...hot air rises..
There are many chemicals found in a hot air balloon to make it rise. The main elements/chemicals are Helium and Hydrogen.
-- Inflate the balloon with some substance that is less dense than air. OR -- Inflate the balloon with air, then heat it after it is sealed.
To make air lighter you would increase the heat inside the balloon, making it less dense, causing it to rise.
He would heat it.
Hot air is lighter than cold air, so cold air sinks and hot air rises; that makes the hot air balloon rise (if the air around the hot air balloon is heated as well, it won't rise, or sink if in the air).
Helium is lighter than air. So helium balloon rises in air.
it can rise because of the helium and the gases help make it rise to the sky
because the air becomes less dense and spreads out so becomes hotter and hot air rise so the balloon does.