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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

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

Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.


What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy. 


Name any one hydrocarbon fraction obtained during the fractional distillation of petroleum which is used as a domestic fuel.


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Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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


The energy in petrol originally came from the sun. Explain how it got into petrol. 


What is biomass? Give three examples of biomass. 


The gravitational pull of the moon cause the sea-water to rise periodically.

(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural


Which produced of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?


Answer the following question.
Write the name of the main constituent of Biogas. Also, state its percentage.


Fill in the blank

Coal, petroleum, and natural gas are _________fuels.


What are renewable energy resources?


What do you know about wind energy? 


Write a short note on nuclear power.


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


Choose the odd one:


Which among the following is the non-renewable resources?


Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?


Exhaustible natural resources are


Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.

Air coal natural gas sunlight petroleum minerals forests oxygen

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