NCERT Solutions for Class 10 Science Chapter 14: Sources of Energy

NCERT Solutions for Class 10 Science Chapter 14 Sources of Energy are provided in this article. This Chapter 14 comes under Unit IV: Natural Resources, which has been omitted as per updated Class 10 Science Syllabus 2022-23. The important topics that are included in this chapter are:

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NCERT Solutions for Class 10 Science Chapter 14

Class 10 Science Chapter 14 Sources of Energy: Important Topics

The chapters revolve around various sources of energy which are categorized into renewable and non-renewable sources of energy. Energy is the ability to do work. It exists in many forms and can be converted from one form of energy into another. Energy is available from nature in the form of many sources that are known as sources of energy.

Poison’s Ratio

Poisson's ratio is the measure of the deformation in the material in a direction perpendicular to the direction of the applied force. Poisson's ratio, essentially, is one measure of a rock's strength that is another critical rock property related to closure stress. Moreover, Poisson's ratio is dimensionless and ranges between 0.1 and 0.45.

Nuclear Fusion

Nuclear Fusion reactions power the Sun and other stars. Two light nuclei merge to form a single heavier nucleus in a fusion reaction. The process releases energy as the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Non-renewable Energy

Non-renewable energy is the one that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames. This energy is limited resources that will eventually run out over the time frame and is from fossil fuels such as coal, crude oil, natural gas, and uranium.

Chapter Related Links:

Uses of Solar Panel	Natural Sources of Energy	Fuel Types
Difference Between Renewable and Non-Renewable Resources	Tidal Energy	Renewable Energy
Solar Cooker	Difference Between Nuclear Fission and Nuclear Fusion	Energy resources environmental impacts

Science Study Guides:

Physics Constants	Periodic Table	Named Reactions
Difference between in physics	Class 10 Science Notes	Difference between in chemistry

CBSE X Related Questions

1.
Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?
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2.
(a) Study the given electric circuit in which 2 A electric current is flowing between points X and Y.

(i) Using the battery, key, voltmeter and ammeter in this given electric circuit, redraw a circuit diagram in which 2 \(\Omega\) and 4 \(\Omega\) resistors are connected between X and Y in parallel combination.
(ii) Circuit drawn by you, in which resistors are connected in parallel combination, calculate the electric current flowing through 4 \(\Omega\) resistor.
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3.
(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \)
(ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \)
Which of the following options clearly describes both the reactions?
- (i) is double displacement, (ii) is displacement reaction.
- Both, (i) and (ii) are displacement reactions and precipitation reactions.
- Both, (i) and (ii) are double displacement reactions and precipitation reactions.
- (i) is displacement, (ii) is double displacement reaction.
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4.
Assertion (A): Reflex actions do not involve thinking.
Reason (R): Most reflex actions are controlled by the spinal cord.
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
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5.
State two differences between the act of chewing food and salivation on sight of food.
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6.
When you look at an object very close to your eyes, the:
- Ciliary muscles of your eye contract and the eye lens becomes thick.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thick.
- Ciliary muscles of your eye contract and the eye lens becomes thin.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thin.
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