Sources of Energy- Assignment

Sources of Energy

Assignment

Section A (MCQ's)

1. Which of the following is non- renewable source of energy?

(i) Wood             (ii) Sun             (iii) Fossil Fuel           (iv) Wind


2. Acid rain happens because
(i) sun leads to heating of  upper layer of atmosphere.
(ii) burning of fossil fuel release oxides of carbon, nitrogen and sulphur in the atmosphere.
(iii) electrical charges are produced due to friction amongst clouds.
(iv) the earth atmosphere contain acids.

3. Fuel used in thermal power plants is

(i) Water      (ii) Uranium          (iii) Biomass    (iv) Fossil fuel

4. In a hydro power plant
(i) potential energy possessed by stored water is converted into electricity.
(ii) kinetic energy possessed by stored water is converted into potential energy.
(iii) electricity is extracted from water.
(iv) water is converted into steam to produce electricity.

5. Which is ultimate source of energy?

(i) water               (ii) sun            (iii) Uranium          (iv) fossil fuel


Section B

1. Why is there a need to harness non-conventional source of energy? Give two main reasons.

2. Write two different ways of harnessing energy from ocean.

3. What steps would you suggest to minimise environmental pollution caused by burning of fossil fuel?

4. What is the role of plane mirror and a glass sheet in a solar cooker?

5. Mention three advantages of a solar cell.

6. What are the limitation in obtaining energy from wind?

7. (i) What is biomass? What can be done to obtain bio-energy using biomass?
    (ii) Explain the principle and working of biogas plant using a labelled schematic diagram.

8.Which is the process used to harness nuclear energy these days? Explain it briefly.

9. How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitation overcome?

10. Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.

Comments

  1. Good afternoon sir,
    Shaurya Narang

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  2. Good afternoon sir
    Japmann singh

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  3. Good afternoon sir
    Kshitij jain

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  4. Good afternoon sir
    Jatin James

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