Question

Why does the earth shake when it moves through the grass?

Answer 1

Answer:

This collapse forces all the grains closer together, closing in the walls around ground water in between grains. The water molecules push back against the sand, raising the water pressure so it's strong enough to force the grains out of contact with one another, while the shaking allows grains to readily move.

Answer 2

This collapse forces all the grains closer together, closing in the walls around ground water in between grains. The water molecules push back against the sand, raising the water pressure so it's strong enough to force the grains out of contact with one another, while the shaking allows grains to readily move.

Actually, the meaning of the question is not understood.But,I have answered as much as I could.

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