Question

Why are dams made thicker at the bottom?

• A. To generate more electricity
• B. To store more water
• C. To withstand the high pressure at the liquid at the bottom
• D. To withstand atmospheric pressure

Answer 1

The correct option is C To withstand the high pressure at the liquid at the bottom

The pressure increases as the distance increase from the free surface of the fluid.

The pressure exerted by liquids increases with depth. So, as the depth increases, more pressure is applied to the walls. That is why walls are made thicker at the bottom, so that they can handle the pressure exerted by water.