Which of the following sources of energy is not a fossil fuel?
Correct answer: B. Uranium
- A. Coal
- B. Uranium
- C. Oil
- D. Gas
Explanation
Uranium is a radioactive element used as nuclear fuel, not formed from the remains of ancient plants or animals. Coal, oil, and gas are fossil fuels because they come from decomposed organic matter over millions of years.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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