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प्रश्न
Give scientific reason.
Hydropower, solar energy and wind energy are called renewable energy.
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उत्तर
- The sources of energy which are being produced continuously in nature and are inexhaustible, i.e., they are always available for use are called renewable sources of energy.
- Hydropower, solar energy, wind energy are produced from energy sources like water, sunlight and wind respectively that are produced continuously in nature and will not get depleted.
Thus, hydropower, solar energy and wind energy are called renewable energy.
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संबंधित प्रश्न
Why is the copper tube of a solar water heater painted black from outside?
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Name some of the solar energy devices.
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Why is the solar cooker box covered with a glass sheet?
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(a) 1.4 kWh
(b) 1.4 kW/m
(c) 1.4 kW/m2
(d) 1.4 kW/m3
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Name one source of energy which is not derived from solar energy directly of indirectly.
Name two devices which can be utilised for the cooking of food so as to save fuel.
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Find an odd one out.
The power produced from solar cells is a DC.
Solar energy is a non depleting energy. Justify.
Solar energy is a renewable energy. How?
Choose the correct statement.
______ is considered as a great source of energy.
Observe the figure and label it properly:
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- Why are reflectors used?
- Draw a flow chart showing different stages in such a process.
- How is the process used to generate electricity?
- What other method can be used to generate electricity using the same energy source?
