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How did the mongolfier brothers make the first hot air balloon rise?
The Montgolfier brothers correctly noted that smoke always rises from a fire. However, what they failed to realize is that it is not the smoke which is rising, but the heat from the fire which rises and incidentally, carries the smoke up with it.When the Montgolfier brothers attempted to harness the lifting power of fire, they chose a fuel which would produce a large amount of smoke. Namely, wet straw. The balloon did rise and fly, but it can't have been a very pleasant experience.Modern hot air balloons fly in much the same way, but rather than using straw for fuel, propane is used as it is nearly smoke-free and is easily portable.
Why does the Hot air balloon rise when the fire is lit beneath the balloon?
The fire warms up the air and the air becomes less dense. So the balloon traps the warm air and since less dense gases rise with denser gasses around it, the warm air rises taking the balloon with it.
Why the flames of fire rise even though gravity pulls things downwards?
The hotter the air the less dense the molecules are so the rise. Just like in a thunderstorm, warm air is quickly thrust upward because of the pressure of the cooler, denser air. Gravity affects(pulls) the cooler, denser air more because it is heavier.
Why does hot air balloon need fire so that it can fly?
A hot air balloon needs fire to heat the air inside the balloon. Heating the air makes it less dense than the surrounding air, causing the balloon to become buoyant and rise. The fire is used to maintain the temperature of the air inside the balloon to keep it flying.
When does a hot air balloon float highest in the sky?
I think the hotter the fire is ( I'm not really sure on how to make fire hotter! :) sorry!) the higher the balloon goes. because hot air rises and so it seems right that if the air is hotter it will rise higher. if you are reading this answer then, you rock!!
Which kind of heat transfer causes smoke to rise from a fire?
Convection is the heat transfer process responsible for causing smoke to rise from a fire. As air near the fire gets heated, it becomes less dense and rises, carrying the smoke along with it.
Why does soot particles rise above the fire and make smoke?
Soot particles are lighter than air and rise due to convection currents created by the heat of the fire. As the soot rises, it cools and mixes with air, forming smoke. The smoke is a combination of the soot particles and other gases and particles produced by the combustion process.
Does hot air rise?
Yes. Hot air is less dense, and therefore lighter than cold air, so it will rise as cold air will drop. A perfect example of this, is smoking rising to the ceiling in a fire, or smoke rising out of your chimney.
How do differences in air pressure cause smoke to rise up a chimney?
Differences in air pressure cause air to flow from areas of high pressure to low pressure. In a chimney, the warm air from the fire creates a lower pressure inside the chimney relative to the outside, causing the smoke to rise up and out of the chimney.
Why does smoke rise quickly?
Smoke rises quickly because it is less dense than the surrounding air. As the smoke is heated, it becomes lighter and more buoyant, causing it to move upward due to the difference in densities between the smoke and the surrounding air. This creates a thermal draft that propels the smoke upwards.
Why does smoke from burning materials rise in the air?
Smoke rises in the air due to the difference in temperature between the smoke and the surrounding air. When materials are burned, the heat causes the air inside the smoke to expand, making it less dense and causing it to rise. This process creates air currents that carry the smoke upwards.
Why does smoke from a fireplace go up the chimney instead of out into the living room?
Smoke rises because it is hotter and less dense than the air around it. The chimney is designed to create a draft that pulls the smoke up and out of the fireplace, preventing it from flowing back into the room. This draft is created by the temperature difference between the inside and outside of the chimney.
Why does smoke travel upward?
Smoke travels upward due to differences in temperature and density between the smoke particles and the surrounding air. As the smoke is hotter and less dense than the surrounding air, it rises. This movement is also influenced by the natural convection process, where the hotter air at the bottom of the smoke column rises as it cools and disperses at the top.
How did the mongolfier brothers make the first hot air balloon rise?
The Montgolfier brothers correctly noted that smoke always rises from a fire. However, what they failed to realize is that it is not the smoke which is rising, but the heat from the fire which rises and incidentally, carries the smoke up with it.When the Montgolfier brothers attempted to harness the lifting power of fire, they chose a fuel which would produce a large amount of smoke. Namely, wet straw. The balloon did rise and fly, but it can't have been a very pleasant experience.Modern hot air balloons fly in much the same way, but rather than using straw for fuel, propane is used as it is nearly smoke-free and is easily portable.
When coal burns particles of soot rise up above the fire and make smoke.Why doesn't the smoke move along the ground?
The temperature of the smoke is higher than the surrounding air, causing it to rise. As it rises, the smoke mixes with the cooler air and dissipates, instead of staying close to the ground. This process is influenced by air currents and atmospheric conditions.
Why is it safest to crawl near the floor when there is a fire?
because smoke rises up. better chance of not breathing in smoke,
Why would you stay close to the floor in a building that was on fire?
When a building is on fire, there is going to be a lot of smoke, and the smoke is likely to be very dangerous to breathe, and it could cause you to pass out if you breathe it, which would obviously prevent you from escaping from the fire. Since the smoke tends to rise, the best place to find breathable air is close to the floor. If you are near an exit, though, you might do better to just hold your breath and run out of the building.
