Question

On a cloudy day, a sealed packet of potato chips is taken to the top of a mountain. The packet is found to be blown up like a balloon. This could be because

• A. The air outside the packet is hotter than the air inside the packet
• B. The air outside is now at a lower pressure than the air inside the packet
• C. The ultraviolet radiation has increased
• D. The packet has a small hole that allowed air to leak in

Answer 1

The correct option is B

The air outside is now at a lower pressure than the air inside the packet

At the top of the mountain, the external pressure is low compare to the earth's surface. Now the air outside the packet is at lower pressure than the air inside the packet.