Physics · Heat and Conduction
Smoke moves upwards primarily because:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Warm air is heavier than cold air
- 2Warm air has higher pressure than cold air
- 3Warm air is lighter (less dense) than cold air✓
- 4Warm air is denser than cold air
Correct answer
Warm air is lighter (less dense) than cold air
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