student is investigating thermal energy by observing a hot air balloon in flight. The student observes that when the flame from the burner changes, the motion of the balloon changes. The hot air balloon is shown.

Question

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When the flame from the burner is high, ___ air molecules rise through the process of ___.

Word Bank:
colder warmer conduction radiation convection

Answer 1

When the flame from the burner is high, warmer air molecules rise through the process of convection.