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प्रश्न
Compare the sun and the fossil fuels as the sources of energy.
उत्तर
| Fossils fuels | The sun | |
| 1 | Fossils fuels are formed from the remains of dead plants and animals. | Inside the sun, nuclear fission occurs, which produces enormous amounts of heat. |
| 2 | The burning of fossil fuels causes air pollution. | The use of solar energy does not cause any air pollution. |
| 3 | Fossils fuel are non-renewable sources of energy. | Sunlight is a renewable source of energy. |
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संबंधित प्रश्न
Why are we looking at alternate sources of energy?
On what basis would you classify energy sources as
(a) renewable and non-renewable?
(b) exhaustible and inexhaustible?
Are the options given in (a) and (b) the same?
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
Write a short note on the pollution caused by burning fossil fuels.
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
What is biomass? Give three examples of biomass.
Can you tell?
Why should we save energy?
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Match the items given in Column I with the items of Column II.
| Column I | Column II |
| (a) Used for road surfacing | (i) Black gold |
| (b) Natural gas | (ii) Vaseline and candles |
| (c) Petroleum | (iii) Bitumen |
| (d) Paraffin wax | (iv) CNG |
Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible? If yes, why? If not, why not?
