One type of energy which has not been controlled so far is:
- ocean thermal energy
- nuclear fusion energy
- geothermal energy
- nuclear fission energy
(b) nuclear fusion energy
Explanation
The energy produced in nuclear fusion is much more than that produced in nuclear fission and has not been controlled so far.
Nuclear fusion is the source of the Sun’s phenomenal energy production.
It is defined as the combining of two lighter nuclei into a heavier one through a nuclear reaction. Light nuclei have to be heated to extremely high temperature, which results in the production of a relatively high amount of energy.
The Sun contains Hydrogen and Helium atoms, where hydrogen fuses in a heavy amount [620 billion Kg of Hydrogen nuclei (protons) into Helium nuclei] every second to produce 384.6 trillion Joules of energy per second and make the sun a nearly inexhaustible source of energy.
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- Which of the following sources of energy are not derived from the sun?Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy.
- Name one source of energy which is not derived from solar energy directly of indirectly.
- Which type of nutrients provides us energy?
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- (a) Differentiate between nuclear fission and nuclear fusion.(b) Which of the two, nuclear fission and nuclear fusion, is made use of: (i) for the production of electricity? (ii) for making a hydrogen bomb?(c) Which produces more energy: nuclear fusion or nuclear fission?(d) Calculate the energy released in joules when 5 g of a material is completely converted into energy doing a nuclear reaction.(e) How much is this energy in MeV? (Speed of light = 3 × 108 m/s)
- Which of the following type of energy is used by living organisms to perform vital life processes?Kinetic energy, Chemical energy, Potential energy, Nuclear energy.
- What is meant by ocean thermal energy? Explain how ocean thermal energy can be used to generate electricity.
- How has the traditional use of wind energy been modified for our convenience?
- Which one of the following statements is not true about nuclear energy generation in a nuclear reactor?(A) Energy is obtained by a process called nuclear fission.(B) The nucleus of Uranium is bombarded with high energy neutrons.(C) A chain reaction is set in the process.(D) In this process a tremendous amount of energy is released at a controlled rate.
- The heat energy released during nuclear fission and fusion is due to the:conversion of stored chemicals into energyconversion of momentum into energyconversion of mass into energyconversion of magnetism into energy
- How has the traditional use of energy of flowing water been modified for our convenience?
- State whether the fission of uranium-235 is caused by low energy neutrons or high energy neutrons.
- 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?$(a)$ geothermal energy$(b)$ wind energy$(c)$ nuclear energy$(d)$ bio-mass.
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