By releasing some of the hot air in a very controlled manner.
What they do is blast cold air into the "hot" air and it makes the air molecules slow down... Thus it makes the air balloon decrease back to earth.
Hot air balloon pilots control the descent of the balloon by releasing hot air and using vents to control the descent rate. They aim to land in a suitable location, often communicating with a ground crew to assist in the landing process. Once on the ground, the crew helps to pack up the balloon for transport back to the launch site.
there is a rope, much like the rope truckers pull for their horns, that you pull down, opening a flap on the top,letting the warm air out. this allows them to float back to earth...
With helium filled balloons, they rise upwards as the gas inside is of a lower density than the atmosphere around them. The balloon will continue to rise and the gas inside it will expand as the atmospheric pressure decreases with increasing altitude. Eventually, the gas inside the balloon will expand enough to burst the balloon and the balloon will fall back to the ground. When and where this happens depends on weather conditions, air temperature, the rubber used in the balloon, etc.
Hot-air balloons function on the principle that warm air rises, and the balloon mechanism holds onto hot air to ascend. Despite this, the hot air can't stay in the balloon forever, the opening at the top of the balloon allowing a slow and steady flow of the hot air out of the balloon and a gentle descent to the ground.
Maneuvering vents ( sometimes called Hoo-Hoos) are opened to vent off hot gases and the torch-like burner is shut down ( also to allay fire hazards).It should be noted the Parachute itself was invented by Blanchard- a pioneer French Balloonist, and these safety devices should be mandatory on all balloons to allow for a soft-impact landing. The older models are tied into the gondola, not back-pack type chutes.
Personalized birthday balloons can be found at Party City, Fast Balloons, Balloons Tomorrow, Zoom Balloon and 1-800-Balloons. Personalized balloons at Party City can range from $3.99 to $9.99.
a hot air balloon only works using thermals, which are currents of hot air rising because one area is heated more than the others. so hot air balloons depend on air to keep it airborne, specifically hot air. once it leaves the earths atmosphere, it is a vacuum. there is no air, so the hot air balloon will fall back into the earth. hence, we see that hot air balloons cannot leave the earth's atmosphere.
When you squeeze a balloon, you are applying pressure to the air inside it. This increased pressure causes the air molecules to move closer together, which changes the balloon's shape. Once you release the balloon, the air molecules move back to their original positions and the balloon returns to its original shape.
To get balloons to stick to a wall effectively, you can use double-sided tape or adhesive putty. Simply attach a small piece to the back of the balloon and press it firmly against the wall. This should help the balloon stay in place securely.
A balloon is filled with helium. Athough, it can be a chemical and physical change. For example you can take the helium out of the balloon, but you cant put it back in it now that its already in the air.
To make balloons stick to walls effectively, you can use double-sided tape or adhesive putty. Simply attach a small piece to the back of the balloon and press it firmly against the wall. This will help the balloon stay in place without damaging the wall surface.