Question

Give reasons for the following statements – 3

a) Mountaineers may suffer from nose bleeding at high altitude. b) A sharp knife cuts vegetables and fruits more effectively than a blunt knife.

c) We tend to slip when we step on a banana peel.​

Answer 1

a) Mountain climbers often get nosebleeds at high altitudes because as the amount of oxygen in the air decreases and the air becomes drier, blood vessels inside your nose can crack and bleed

b) ➡️A sharp knife cuts fruits and vegetables more efficiently than a blunt knife because, the surface area of the knife is lesser than the blunt knife. ➡️When the surface area is lesser, the sharp knife can easily cut through the fruit or vegetable making it easy to cut.

c) We slip when we step on a banana peel because the inner side of banana peel being smooth and slippery reduces the friction between the sole of our shoe and the surface of road.