Question

The temperature of water at the surface of a deep lake is $2^{\circ }\text{C}$. The temperature expected at the bottom is _____.

• A. 0°C
• B. 2°C
• C. 4°C
• D. 6°C

Answer 1

The correct option is C

4°C

Assuming 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 $4^{\circ }\text{C}$, as water is densest at that temperature.