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(A) Nuclear energy is released during nuclear fission and fusion. In nuclear fission,a uranium atom is bombarded with low-energy neutrons,causing it t

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Nuclear energy

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(A) Nuclear energy is released during nuclear fission and fusion. In nuclear fission,a uranium atom is bombarded with low-energy neutrons,causing it to split into two relatively lighter nuclei,which releases a huge amount of energy.In nuclear fusion,lighter nuclei are fused together to form heavier nuclei,also releasing tremendous energy.These reactions occur independently of sunlight.Geothermal energy,wind energy,and bio-mass are all ultimately derived from solar energy.Geothermal energy is heat stored within the Earth's crust,partially influenced by solar heating of the atmosphere and oceans.Wind energy is caused by the uneven heating of the Earth's surface by the Sun.Bio-mass is derived from plants and animal wastes,which grow and develop through photosynthesis,a process directly dependent on sunlight.

Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?

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