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What is geothermal energy ?...

What is geothermal energy ?

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Geothermal energy is the heat energy from hot rocks present inside the earth. This heat comes from the fission of radioactive materials which are naturally present in these rocks. Geothermal energy is available only at some places in the world. Geothermal energy can be used to produce electricity.
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(a) What is geothermal energy ? (b) What is the source of heat contained in geothermal energy ? (c ) Explain how, geothermal energy is used to generate electricity. (d) State two advantages of geothermal energy. (e) State two disadvantages of geothermal energy.

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Renewable energy is energy produced from sourece that do not deplete or can be replenished within a human's life time. The most common examples include wind, solar, geothermal, biomass, and hydroelectric power. This is in contrast to non-renewable sources such as fossil fuels. Most renewable energy is derived direcetly or indirectly from the sun. Sunlight can be captured directly using solar technologies. The sun's heat drives winds, whose energy is captured with turbines. Plants also rely on the sun to grow and their stored energy can be utilized for boienergy. Not all renewable energy sources rely on the sun. For example, geothermal energy utilizes the Earth's internal heat, tidal energy relies on the gravitational pull of the moon, and hydroelctric power relies on the flow of water. What is renewable energy ?

(a) What is mechanical energy ? (b) What is electromagnetic energy ?

LAKHMIR SINGH & MANJIT KAUR-SOURCES OF ENERGY -Exercise
  1. The constituent of biogas which makes it an excellent fuel is :

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  2. The major component of biogas is :

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  3. Which of the following is more environment friendly ?

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  4. Which one of the following is not renewable energy technology ?

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  5. What is geothermal energy ?

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  6. What are the advantages of nuclear energy ?

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  7. Can any source of energy be pollution-free ? Why or why not ?

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  8. Hydrogen has been used as a rocket fuel. Would you consider it a clean...

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  9. Name two energy sources that you would consider to be renewable. Give ...

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  10. Give the names of two energy sources that you would consider to be exh...

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  11. A solar water heater cannot be used to get hot water on : (a) a sunn...

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  12. Which of the following is not an example of bio-mass energy source ? ...

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  13. Most of the sources of energy we use represent stored solar energy. Wh...

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  14. Compare and contrast fossil fuels and the sun as sources of energy.

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  15. Compare and contrast bio-mass and hydro-electricity as sources of ener...

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  16. What are the limitations of extracting enegry from : (a) the wind ...

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  17. On what basis would you classify energy sources as : (a) renewable a...

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  18. What are the qualities on an ideal source of energy ?

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  19. What are the disadvantages of using a solar cooker ? Are there places ...

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  20. What are the environmental consequences of the increasing demand for e...

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