Question

The temperature of water at the surface of a deep lake is $2^{\circ }C$. The temperature expected at the bottom is.(Lake is deep enough)

• A. $4^{\circ }C$
• B. $0^{\circ }C$
• C. $2^{\circ }C$
• D. $6^{\circ }C$

Answer 1

The correct option is A $4^{\circ }C$

Given that the lake is deep enough, we should expect a density and temperature distribution such that the densest water settles at the bottom. That layer of water would be at $4^{\circ }C$, as water is densest at that temperature!