Question

winds are caused by air moving around in the atmosphere. wind turbines harness the mechanical energy in wind and convert it into electricity. what is the source of the mechanical energy in wind?

a. geothermal energy

b. chemical energy

c. solar energy

d. nuclear energy

Explanation:

Wind is caused by differences in air pressure, which result from uneven heating of the Earth's surface by the sun (solar energy). Solar energy heats the atmosphere unevenly, leading to air movement (wind) with mechanical energy. Geothermal energy is from Earth's internal heat, chemical energy from reactions, and nuclear energy from atomic processes—none relate to wind's mechanical energy source.

Answer:

C. solar energy