Question

Give reasons
i) Hot air balloon rises up

Answer 1

➠ AnSwer :-

• Hot air balloon uses a burner to heat up the air inside the balloon.
• Hot air is therefore lighter than cold air and Helium gas is filled in the balloon.

So this is the reason why does a hot air balloon fly in the sky.

Answer 2

Answer:

Hot air balloons work because hot air rises. By heating the air inside the balloon with the burner, it becomes lighter than the cooler air on the outside. This causes the balloon to float upwards, as if it were in water.