Sunday, August 26, 2012

CBSE X Physics Assignment Sources of Energy

CBSE X Physics Assignment/Worksheet-Chapter: Sources of Energy
1. What is energy?
2. What do you mean by ‘source of energy’?
3. What should be the characteristics of a source of energy?
4. Name a few sources of energy used in our daily life.
5. What are renewable and non-renewable sources of energy? Give examples of each.
6. Name some of the sources of energy used in ancient times.
7. Give two advantages and 2 disadvantages, each of renewable and non-renewable sources of energy.
8. What are fossil fuels? Give a few examples.
9. Name a gaseous fossil fuel.
10. Which of the following is not derived from solar energy: - geothermal, wind energy, fossil fuels, Biomass.
11. What are the limitations of extracting energy from (a) the wind (b) the waves (c) the tides?
12. What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?
13. Name two indirect ways of using solar energy.
14. Give the transformation of energy (sequence) taking place in
(a) Thermal power plant (b) hydro power plant (c) solar cell
15. Give advantages and disadvantages of constructing dams.
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