Question

What is the principle behind the working of hot air balloons?
A) Atmospheric pressure
B) Conduction
C) Monsoon winds
D) Hot air rises fast
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Answer 1

Answer:

Option (D) Hot air rises fast is the correct answer.

Explanation:

Hot air balloons works on the principal that hot air rises fast , because it is lighter compared to cold air.

hope it helps you.

Answer 2

Answer:

D) Hot air rises fast.

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