1. What is solar energy ?
2. What are the merits of a solar cooker 2
3. What does a solar cell do ?
4. Which are the most common energies obtainable from oceans ?
8. Name the fission products of 235 U when it is bombared with a neutron.
92
5. What is a tide ?
6. What is meant by OTEC ?
7. What is the relation between MeV and J ?
9. What is the source of energy in the Sun and the stars 2
10. In which process energy released is more : nuclear fission or nuclear fusion ?
Answers
Answer:
1.Solar energy is any type of energy generated by the sun. Solar energy can be harnessed directly or indirectly for human use. These solar panels, mounted on a rooftop in Germany, harvest solar energy and convert it to electricity. ... Solar energy is created by nuclear fusion that takes place in the sun.
2.Solar cooking is free. ...
Solar cooking is quick and easy. ...
Food cooked with a solar cooker is healthy. ...
Solar cooked food tastes amazing! ...
Solar cookers make no noise. ...
Cooking with sunshine is kind to the environment. ...
Solar cooking ovens are portable. ...
4.The ocean can produce two types of energy: thermal energy from the sun's heat, and mechanical energy from the tides and waves. Oceans cover more than 70% of Earth's surface, making them the world's largest solar collectors.
8.'A uranium-235 atom absorbs a neutron to become uranium-236 which then undergoes fission to form the products xenon-140 and strontium-93 with three neutrons. '
5.The definition of tide is the cycle of rising and falling of the surface of bodies of water caused by the attraction of the moon and the sun. An example of the tide is when the ocean's water is at its highest point on the beach.
6.Ocean Thermal Energy Conversion (OTEC) is a process that can produce electricity by using the temperature difference between deep cold ocean water and warm tropical surface waters. OTEC plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity.
9.nuclear fusion
The energy source for all stars is nuclear fusion. Stars are made mostly of hydrogen and helium, which are packed so densely in a star that in the star's center the pressure is great enough to initiate nuclear fusion reactions. In a nuclear fusion reaction, the nuclei of two atoms combine to create a new atom.
10.The energy released by fission is a million times greater than that released in chemical reactions; but lower than the energy released by nuclear fusion. The energy released by fusion is three to four times greater than the energy released by fission.
THEREFORE IN NUCLEAR FUSION THE ENERGY RELEASD IS MORE
Explanation:
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