Earth receives large amount of energy directly from:
- A. Wind
- B. Water
- C. Sun
- D. Moon
Explanation
Solar radiation is the primary energy input to the Earth, and wind and flowing water are themselves driven by the uneven solar heating of the atmosphere and oceans, which makes them secondary rather than direct sources. The Sun's energy comes from the fusion of hydrogen into helium in its core. Tidal energy is the one significant contribution that traces back to the Moon instead.
Related questions
A machine takes in 500 J and delivers 350 J of useful output. Its efficiency is
The efficiency of a machine is
A machine takes in 500 J and delivers 400 J of useful output. Its efficiency is
In a real pendulum swinging back and forth, the total mechanical energy slowly decreases because
Which of the following is NOT a renewable source of energy?