Hot air balloons rise because heating air makes it less dense than the surrounding cold air, creating lift (like Diet Coke floating), while cooling the air makes it denser, causing descent (like regular Coke sinking); pilots control altitude by managing the temperature of the air inside the balloon.
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Hot Air Balloon Science: Why They Rise and Fall #shortsAdded:
Hot air is less dense than cold air. And we know from our Coke cans, less dense things will rise. So when Matteo does this and heats up the air in the balloon, he's basically diet coing us.
And then over time, the air outside cools back down the air in the balloon, making it more dense, and therefore we start to sink down like regular coke. So all you have control over is whether we go up or
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