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What makes hot air balloons float? - Quiz
  • 1. How does hot air cause a balloon to rise?
A) It expands in size.
B) It is heavier than cool air.
C) It is less dense than cooler air.
D) It has more pressure.
  • 2. What happens to the air inside the balloon when it is heated?
A) It becomes heavier.
B) It contracts.
C) It expands.
D) It escapes.
  • 3. Which part of the balloon holds the hot air?
A) The burner.
B) The basket.
C) The flame.
D) The envelope.
  • 4. What is the typical flight duration of a hot air balloon?
A) 30 minutes.
B) 5 to 10 hours.
C) All day.
D) 1 to 2 hours.
  • 5. What is the purpose of the vent on top of the hot air balloon?
A) To stabilize the balloon.
B) To release hot air.
C) To increase lift.
D) To let in cool air.
  • 6. Which condition is ideal for hot air ballooning?
A) Calm and clear weather.
B) High humidity.
C) Rainy conditions.
D) Windy and cloudy weather.
  • 7. How is the altitude of a hot air balloon controlled?
A) By adjusting the temperature of the air.
B) By changing the balloon color.
C) By changing the weight of the basket.
D) By adding more gas.
  • 8. At what height do most hot air balloons typically fly?
A) Above 10,000 feet.
B) At sea level.
C) Under 500 feet.
D) Between 1,000 and 3,000 feet.
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