Question

The water from a hand-pump is warm in winter because ___________.

• A. our body is cold in winter and water appears to be warm
• B. the temperature inside the earth is higher than the atmospheric temperature
• C. the pumping process causes friction which warms up the water
• D. inside water comes out and absorbs heat from the environment

Answer 1

Answer: (B)

the temperature inside the earth is higher than the atmospheric temperature

As temperature inside the earth's surface is higher, the ground water is hotter than the atmosphere.

So when ground water is pumped out, it feels hotter.