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Why is a hot air balloon a good example of convection?
A hot air balloon is a good example of convection because it relies on the principle of hot air rising and colder air sinking to generate lift. The burner heats the air inside the balloon, making it less dense and causing it to rise. This creates a convection current that helps the balloon float in the cooler surrounding air.
Why do hot air balloons float in the air?
Hot air balloons float in the air because the air inside the balloon is heated by a burner, causing it to be less dense than the surrounding cooler air. This temperature difference creates a buoyant force that lifts the balloon. The balloon will continue to rise until the temperature inside equalizes with the outside air, allowing it to maintain a stable altitude.
Why does air come out when it is cold in the balloon and when its hot it goes back in?
It doesn't "come out" of the balloon or go "back in." The air inside the balloon is shrinking and expanding, which makes the balloon smaller when it's colder or bigger when it's warmer. This is because gases expand when heated and contracts when cooled.
What air force makes a air balloon go up and down?
This is the buoyancy force. Archimedes is credited with first formulating this into a mathematical principle: the buoyancy force of an object is equal to the weight of fluid it displaces. In the case of a hot air balloon, the "fluid" is the outside cool air and the balloon is displacing a volume of cool air equal to the volume of the inflated balloon. So you can say the buoyancy force F = V ρ g, where V is the volume of the inflated ballon, ρ is the outside air density, and g is gravity. A balloon can float because it is displacing this cool air with hot air which is less dense. The volume of hot air inside the balloon thus weighs less than the same volume of cold air outside the balloon. For a balloon to be float upwards, the buoyancy force has to be at least equal to the weight of the balloon (the balloon fabric, the gondola, the people, equipment and cargo, and the hot air inside). For example, for a balloon of 100,000 cubic foot volume (typical), with outside air at 20 deg C near sea level, the buoyancy force is about 7500 lbs. This force has to lift the gondola, people, equipment and of course the hot air inside the balloon, all of which have weight. By far the greatest percentage of that total weight is the heated air inside since there is so much of it.
Hot air balloons have a gas heater attached to them the pilot can turn the heater on the balloon and the balloon will go high why?
Hot air balloons have a gas heater that is generally powered by propane. When the pilot turns the heater on, the balloon will fly high due to the hydrocarbon chamber that allows the pilot control of ascent and descent of the hot air balloon.
What makes the hot air balloon go up and down?
A hot air balloon goes up when the air inside the balloon is heated, causing it to become less dense than the surrounding air. This creates lift. To descend, the air inside the balloon is allowed to cool, increasing its density, which causes the balloon to lower.
What helps a hot air balloon go higher?
A hot air balloon goes higher by increasing the temperature of the air inside the balloon. When the air inside the balloon is heated, it becomes less dense than the surrounding air, allowing the balloon to rise. Pilots can control the altitude by adjusting the heat to maintain the desired height.
How does a hot air balloon go in the air?
A hot air balloon rises due to the principle of buoyancy. The air inside the balloon is heated, which causes it to become lighter and less dense than the surrounding air. This difference in density creates lift, causing the balloon to float upwards.
How does a hot air balloon go up and down?
Heat rises of it makes the ballon rises
Who is a traveler in a hot-air balloon?
Anyone can go on a hot air balloon, but there needs to be a driver to lead it.
What make a hotair balloon go up?
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.
What do you need to go hot air ballooning?
a hot air balloon
Why aren't hot-air balloon flights scheduled on hot days?
Because the hot air balloon will keep on going up because the hotter the air gets the higher the hot air balloon will go!
How old do you have to be to go on a hot air balloon?
Parents are free to take children of any age on a hot air balloon.
Why is a hot air balloon a good example of convection?
A hot air balloon is a good example of convection because it relies on the principle of hot air rising and colder air sinking to generate lift. The burner heats the air inside the balloon, making it less dense and causing it to rise. This creates a convection current that helps the balloon float in the cooler surrounding air.
What does a hot air balloon use to make the balloon go down?
Hot air balloons go down by releasing the hot air in the balloon. Normally you just let the air inside cool and descend slowly. You release hot air only if you wish to descend more quickly.
How do hot air air balloons fly?
In a hot air balloon, a gas burner is used to heat air to a temperature of about 212°F (100°C). Since hot air is lighter and less dense than the cool air around the balloon, the heated air causes the whole balloon to rise. When the air inside the balloon cools down, or when the hot air is let out, the balloon goes down. A hot air balloon is powered by hot air, hot air is lighter (less dense) then the air outside of the balloon (More dense) Heat rises, so the heated air, pushes up into the balloon allowing the balloon to lift. The more heat, the faster it will go, the less heat, the slower it will go, until it starts to descend. Decent is relatively slow, because the air is slowly cooling, however the cooler the air the faster the decent is. To avoid rapid falling, heat it applied to reheat the air so the decent goes slowly.
