Question

Explain the following :

A. Why does a helium balloon burst when it rises too high up?
B. Why do we feel nauseated when we go deep into the water? [5 MARKS]

Answer 1

Part A : 2 Marks
Part B : 3 Marks

A. Pressure decreases as we go up in the atmosphere so when the helium balloon rises up the pressure inside the balloon becomes more than the pressure outside and so the balloon first expand and then finally bursts.

B. As we go deep into the water the pressure increases. So now there is higher pressure outside and less pressure inside the body. So our lungs feel crushed and we feel nauseated.