Give the Names of Two Energy Sources that You Would Consider to Be Exhaustible. Give Reasons for Your Choices. - Science


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



Two exhaustible energy sources are as follows:
→ Coal: It is produced from dead remains of plants and animals that remain buried under the earth’s crust for millions of years. It takes millions of years to produce coal. Industrialization has increased the demand of coal. However, coal cannot replenish within a short period of time. Hence, it is a non-renewable or exhaustible source of energy.
→ Wood: It is obtained from forests. Deforestation at a faster rate has caused a reduction in the number of forests on the Earth. It takes hundreds of years to grow a forest. If deforestation is continued at this rate, then there would be no wood left on the Earth. Hence, wood is an exhaustible source of energy.

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Chapter 14: Sources of Energy - Intext Questions [Page 254]


NCERT Science Class 10
Chapter 14 Sources of Energy
Intext Questions | Q 2 | Page 254


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


Which of the following is not a renewable source of energy?

(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood

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

What is the composition of liquefied petroleum gas (LPG)? 

Name the constituents of biogas.

The fuel which is not obtained from biomass is:

(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal

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

 in the sun?

What is meant by the renewable and non-­renewable sources of energy? State two differences between them, giving two examples of each

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

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

Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?

Name five renewable and three non-renewable sources of energy.

Renewable source of energy is :

Fill in the blank

__________ are examples of renewable energy resources.

Fill in the blank

Solar cells use the power supplied by the ______.

Fill in the blank

_______is the coal with the highest percentage of coal.

Choose the correct answer.

Windmills have been used for many centuries in

State whether the following is True or False.

Coal and petroleum are renewable energy resources.

State whether the following is True or False.

Renewable energy resources have limited supply in nature.

State whether the following is True or False.

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

State whether the following is True or False.

Coal takes millions of years to form.

What are renewable energy resources?

What is the main difference between renewable and non-renewable energy resources?

What are fossil fuels?

Name a few major producers of petroleum in the world.

Give an account of the use of solar energy.

What do you know about wind energy?

Write a short note on nuclear power.

Can you tell why should we save energy?

Can you tell what is ‘green energy’?

Can you tell what are the non-conventional energy resources?

Can you tell which forms of energy from the sun are used in solar energy devices?

Can you tell why should we maximise the use of non-conventional energy resources?

Who is the odd-one-out?

Diesel, crude oil, natural gas, wind

Who is the odd-one-out?

Sunlight, wind, waves, petrol

Who is the odd-one-out?

Leaving the fan on in a vacant room, leaving the TV on while working, using AC during winter, putting off the light when going out.

State the main difference between the renewable and non-renewable sources of energy.

Why are fossil fuels called non-renewable sources of energy?

Why is charcoal considered better fuel than wood?

Name two forms of sea energy.

Name the major constituent of natural gas.

Tidal energy is ______ type of energy.

Higher Order Thinking Skill (HOT)

What are the objectives for replacing non-conventional energy resources from conventional energy resources?

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

Choose the odd one:

Which among the following is the non-renewable resources?

What is non-renewable resources?

Write about Renewable resources.

Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?

Choose the incorrect statement regarding wind power

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

Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource?

Exhaustible natural resources are

Write True/False against the following statement.

Oxygen in air is an exhaustible natural resource.

Write True/False against the following statement.

Wildlife is an exhaustible natural resource.

Look at figure where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?

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?

Why petrol is exhaustible natural resource whereas sunlight is not? Explain.

Complete the crossword in figure with the help of the clues :


1. Fuels obtained from dead remains of living organisms. (6, 5)

2. A process by which the various constituents of petroleum are separated. (8)

3. A porous black substance obtained from coal. (4)

4. Another name for motor fuel. (6)


5. The substance obtained by carbonisation. (4)

6. Fuel for heavy motor vehicles. (6)

7. A petroleum product used for road surfacing. (7)

8. Dead remains of sea animals got converted into it. (9)


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