Hot air rises and cold air falls.
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.
Hot air rises because it is less dense than cold air. As hot air heats up, its molecules become less tightly packed and therefore lighter than the surrounding cold air, causing it to rise. This process is known as convection.
No Gas Just hot air which is why it is called a hot air balloon. If you were wondering hot air is lighter than cold air which makes it rise so when it is trapped inside the balloon the whole thing will rise.
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).
Hot air tends to rise and cold air tends to sink due to differences in density. This creates convection currents where hot air moves towards colder areas. However, the movement of air also depends on factors such as pressure gradients and wind patterns.
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.
Hot air
Hot air rises in the atmosphere because it is less dense than cold air, creating a buoyant force that causes it to move upward.
if you mean how the hot air in a hot air balloon makes it rise, its because hot air is less dense than cold air. when cold and hot air meet the cold air sinks thus making hot air left to rise.so when you put hot air in a balloon the air would rise. hope this helps.
Hot air has less mass which make it less dense, thus allowing it to rise over a cold air mass.
Cold air is denser than hot air, so it is heavier and sinks while hot air is lighter and rises. This movement is known as convection, where the warmer air displaces the cooler air, causing it to rise.
Hot air rises because it is less dense than cold air.
Convection
Updrafts are systems of hot air, which rise. Birds and expert hot-air ballooners use them. Downdrafts are systems of cold air that tend to fall and bring things flying in it with them.
Hot air rises because it is less dense than cold air. When air is heated, its molecules move faster and spread out, making the air less dense. This lower density causes the hot air to rise, while the denser cold air sinks.
Convection is the type of heat transfer that causes hot air to rise and cold air to fall. This is because warmer air is less dense and tends to move upwards, while colder, denser air sinks. Radiation and conduction do not directly cause this vertical movement of air.
Yes, due to differences in density, hot air tends to rise while cold air sinks. This creates a cycle of air movement known as convection, where warm air expands and becomes less dense, making it buoyant and causing it to rise. In contrast, cold air contracts and becomes denser, leading it to sink.