Question

Dams are made thicker at the base than at the top. Give reason

Answer 1

because if the top is thicker the dam cannot hold the water and the dam can broke and water can leak.

so the bottom part is thicker than top.

Answer 2

the dam is much thicker at the bottom than it is at the top. This is because the pressure of the water is much greater deeper down and the dam needs to be thick at the bottom so that it is strong enough to withstand this larger pressure.