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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Give an Account of the Use of Solar Energy. - Geography

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प्रश्न

Give an account of the use of solar energy.

टीपा लिहा
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उत्तर

Solar energy is the energy that we receive from the sun. It is readily available in nature and in unlimited quantities.
While there are several ways to obtain solar energy, one way is by the use of solar cells or photovoltaic panels. These panels are made from very thin semiconducting materials which, when exposed to sunlight, use the heat and light of the sun to shake the electrons loose and create an electric current.
Solar cells are used for lighting street lamps, electronic calculators, watches, smartphones, cameras, traffic signals, water pumps, and home lighting. Solar energy is being used to heat ovens, cook food, and heat water.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 11: Renewable and Non-renewable resources - Answer the questions in one or two paragraph

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ऑक्सफोर्ड युनिव्हर्सिटी प्रेस Voyage Geography [English] Class 7
पाठ 11 Renewable and Non-renewable resources
Answer the questions in one or two paragraph | Q 1

संबंधित प्रश्‍न

 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?


Fill in the following blank with a suitable word:

The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.


What is the difference between a renewable and a non-renewable source of energy? Explain with examples.


Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days? 


Name the component which is found in natural gas well as in biogas. 


State two important uses of natural gas


State one important use of CNG these days.


Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen.


Coal cannot be converted into one of the following forms of energy. This is:

(a) coal gas
(b) electricity
(c) oil
(d) charcoal


Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy. 

Name another element which is usually found in combination with X in fossil fuels.


Name the original source of wind energy. 


Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen


State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.


State whether the following is True or False.

Coal takes millions of years to form.


Name a few major producers of petroleum in the world.


Which of the following is a non-renewable source of energy?


In a hydro power plant ______.


Choose the odd one:


Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one nonconventional source of energy.


The underlined word in the following sentence have been jumbled up. Write them in their correct form.

Nutsgilh is an example of inexhaustible natural resources.


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