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Engineering · L1 · Why Hot Air Rises

The chain of events that lifts a hot air balloon — and lets a hawk do the same thing without flapping.

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🔥 Burner heats the air inside a balloonIs the air now warmer than outside?🎈 Warm air is lighter, floats upwardAir stays where it is🦅 A hawk can ride that same rising warm air tooYesNo
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