Q42 of 176 Page 124

Explain why, snow shoes stop you from sinking into soft snow.

Snow shoes have a large surface area in contact with snow therefore the pressure applied on snow is less thus the person does not sink.


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40

Explain why, the tip of a sewing needle is sharp.

 41

When is the pressure on the ground more- when a man is walking or when a man is standing? Explain.

 43

Explain why, when a person stands on a cushion, the depression is much more than when he lies down on it.

 44

Use your ideas about pressure to explain why it is easier to walk on soft sand if you have flat shoes rather than shoes with sharp heels.