A dam is thicker at the bottom than at the top partly because
A) surface tension exists only on the surface of liquids.
B) water is denser at deeper levels.
C) it looks better.
D) water pressure is greater with increasing depth.
E) none of these

Question

Quizplus · Accepted Answer

Water pressure increases with depth, necessitating a thicker structure at the bottom of a dam to withstand the greater forces exerted by the water at those deeper levels.

A Dam Is Thicker at the Bottom Than at the Top