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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

What do you know about wind energy? - Geography

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प्रश्न

What do you know about wind energy? 

लघु उत्तर

उत्तर

The wind is used to produce electricity. When the wind blows, it turns the three large blades of the windmill, which are attached to the turbine. The turbine, which is connected to the generator, converts the energy of the wind into electrical energy.
Wind, like the sun, is nature’s gift to the earth. It is free and widely available.

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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 4

संबंधित प्रश्‍न

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


Compare and contrast fossil fuels and the Sun as direct sources of energy


State any four characteristics of a good source of energy.


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


Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.


State two important uses of natural gas


 Describe how fossil fuels were formed.


Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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


What is biomass? Give three examples of biomass. 


Which of the following is not an example of a biomass energy source?

(a) wood
(b) biogas
(c) atomic energy
(d) cow-dung


What type of nuclear reaction is responsible for the liberation of energy: 

 in a nuclear reactor?


Which of the two is more energy efficient: filament type electric bulb or CFL? Why? 


How long are the energy resources of the earth like coal, petroleum and natural gas expected to last?


You have three unlabelled test tubes containing ethanol, ethanoic acid and soap solution. Explain the method you would use to identify the compounds in different test tubes by chemical tests using litmus paper and sodium metal.


Select the renewable and non-renewable sources of energy from the following :

  1. Coal
  2. Wood
  3. Water
  4. Diesel
  5. Wind
  6. Oil

State whether the following is True or False.

China, the USA, and Spain are major producers of wind energy.


Name a few major producers of petroleum in the world.


The major problem in harnessing nuclear energy is how to ______.


Write about Renewable resources.


Exhaustible natural resources are


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