CBSE Class 10 Physics Source of Energy Worksheet

Practice Worksheets for Class 10 Science: Chapter 14 Sources of Energy

Explore reliable practice materials for Chapter 14 Sources of Energy tailored for Class 10 learners. Utilizing these Science worksheets ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.

Practice Chapter 14 Sources of Energy Worksheets for Class 10 Science

View or download the dedicated Chapter 14 Sources of Energy practice resource below. Engaging with these objective and subjective questions daily ensures continuous academic progress and mastery of the 2026-27 curriculum.

Question : A solar water heater cannot be used on? 
a. A sunny day
b. A cloudy day
c. A windy day
d. A hot day
Answer : B
Explanation: Solar heater works with the help of sunlight but on a Cloudy day there is no sunlight on earth as result of which solar heater will not work. 
 
 
Question : Statement A : obtaining energy from nuclear fusion reaction is preferable to obtaining of energy from nuclear fission reactions. ,
Statement B : Electricity generated by the water stored in a dam can be considered to be another form of solar energy. 
a. Both the Statement A and B are false
b. Both the statement A and B are false
c. Statement A is true, Statement B is false
d. Statement B is true, Statement A is false
Answer : D 
Explanation: Nuclear fusion creates more destruction than fission so statement A is false and solar energy helps in water cycle so statement B is true.
 
 
Question : Which of the following is a primary fuel 
A. Wood
B. Diesel
C. Natural gas
D. Kerosen
a. A and C
b. A and B
c. A and D
d. A, B and D
Answer : A
 
Explanation: Wood and Natural gas are the primary fuels that are found in nature and can be extracted, captured, cleaned or graded without any sort of enegy conversion or transformation processs.
 
 
Question : Name two forms of energy in which solar energy manifests itself in oceans. 
Answer :  Tidal energy and Ocean thermal energy are two forms of energy in which solar energy manifests itself in oceans.
 
 
Question : What is the scope of wind energy in India ? 
Answer :  After Germnay , U.S.A. and Denmark , India ranks fourth in world in wind power generation. Ministry of Renewable Sources of Energy is implementing the world's largest Wind Resources Assessment Programme to support wind energy programmes.
To promote utilization of wind power, a Centre of Wind Energy (C-WET) has been set up at Chennai. Out of a total capacity of 1.025 MW power of India , 380 MW is being generated at Kanya Kumari, Kerala.
 
 
Question : Describe a solar cooker. Give its advantage. 
Answer : 
Table-6
Solar cooker is a device used for cooking food with the help of solar energy. A solar cooker consists of an insulated metal box which is painted all black from inside. A plane mirror reflector is attached to the box. There is a thick glass sheet which acts as a cover over the box. The food to be cooked is placed in the box and the box is covered with the glass sheet. The cooker is placed in the sunlight and the position of the reflector is adjusted in such a way that a strong beam of sunlight falls over the cooker top. These rays pass through the transparent glass sheet and are absorbed by the black box and the containers. The use of black surface and black containers is due to the fact that a black surface absorbs more heat than any other colour. Therefore, the box and the containers absorb maximum amount of infra-red radiation from the sunlight falling on it. As a result, the temperature inside the box rises to about 100°– 140°C in two to three hours and this heat cooks the food in the containers. This type of solar cooker can be used to prepare food items which require slow heating and cannot be used for baking and frying purposes.
Advantages of Solar cooker :
a. The use of solar cooker for cooking food materials saves fuel.
b. It is cheaper method of cooking food.
c. In this method, food is cooked at comparatively lower temperature and therefore, the nutrients of food are not destroyed during cooking.
 
 
Question : What is pollution caused by fuels ? Give some details of pollution by coal, petrol and diesel. 
Answer :  i. Pollution caused by fuels : The burning of fuels releases many harmful gases and solid residues in the clean air around us. This cause danger to our lives and environment. The contamination of air with dust, smoke and harmful gases is called air pollution. Combustion of fuels is one of the major causes of pollution in atmosphere in our cities and towns. Most of the air pollution is due to the products of combustion of fuels in homes, transport and industry. The main pollutants in air are carbon monoxide, carbon dioxide, oxides of sulphur and nitrogen.
ii. Pollution caused by burning coal : Coal contains mainly the compounds of carbon, hydrogen, oxygen, sulphur, nitrogen etc. and some free carbon. This leads to respiratory troubles, headache, dizziness, unconsciousness, etc.
a. Combustion of coal, in the presence of insufficient supply of air liberates carbon monoxide. Carbon monoxide is very dangerous. This leads to respiratory troubles, headache, dizziness unconsciousness etc.
b. Coal contains compounds of sulphur and nitrogen. These compounds on combustion give oxides of sulphur and nitrogen which are corrosive and poisonous. Sulphur dioxide is very irritating and affects our lungs.
c. When coal is burnt, a large amount of smoke is also produced in air. The smoke contains some un-burnt particles. These particles, when inhaled, create breathing problems.
iii. Pollution caused by Burning of Petrol and Diesel : The major cause of air pollution in big towns and cities it's the gases produced by the burning of petrol and diesel oil in the internal combustion engines of cars, scooters, buses, trucks, motorcycles and other heavy vehicles. Methods of control the Pollution caused by Vehicles : It is difficult to control the air pollution caused by burning of petrol or diesel than those caused by burning of coal. This is due to the fact that petrol an diesel are burnt in moving vehicles. It is very difficult to control air pollution produced by these vehicles because they keep moving from one place to another.
Scientists are working with full strength to devise methods to control pollution.
Some methods to decrease the pollution created by burning of petrol and diesel are :
a. The condition of engines of the vehicles should be well maintained and regularly checked so the complete combustion of fuel takes place in the engines. This will decrease the pollution due to incomplete combustion of petrol and diesel.
b. To avoid lead pollution in the environment, car engines should be redesigned so that theses can run on unleaded petrol.
c. The exhaust gases before releasing into the air be treated with catalysts like platinum so that unwanted products are converted into harmless compounds.
d. There should be proper check of pollution causing vehicles. The law should be followed strictly to get pollution check for all vehicles.
e. Vehicles should be used only when absolutely necessary. For short distance, habit of walking should be followed.
 
 
Question : Compare and contrast fossil fuels and the sun as source of energy. 
Answer :  i. Both are natural sources of energy.
ii. Both are widely used sources of energy.
iii. Least technology is required to get energy by any of the sources.
Contrast :
i. Sun's energy can be used only during day but fossil energy can be sued any time during day or during night.
ii. Solar energy is almost free where, as fossil energy costs much.
iii. Infinite amount of solar energy is available almost free of cost whereas there is a limited stock of fossil fuel.
iv. Solar energy is renewable source of energy where as it takes millions of year to produce fossil fuel.
v. Solar energy is totally pollution free where, as fossil fuel produces a lot of pollution.

 

CONCEPTUAL QUESTIONS-

Question : What is a source of energy? What are its essential characteristics?

Question : What is the cause of ocean thermal energy?

Question : What are renewable and nonrenewable sources of energy? Give examples.

Question : What is biomass and biomass energy?

Question : Out of two solar cookers, one was covered and the other one was left open. Which one of the two will be more efficient and why?

Question : What is the use of black painted surface in a solar cooker?

Question : Name the device used to convert

a. Solar energy into heat

b. Solar energy into electricity

Question :  a. Name four gases which are mainly present in biogas.

B .List two advantages of using biogas over fossil fuels.

Question : List any three hazards of nuclear waste. How does the disposal of nuclear waste pose a problem for the plant and animal life?

Question : Define anaerobic degradation.

Question : Mention three disadvantage of producing hydroelectricity by constructing the dams.

Question : What is a solar cell panel? Mention any three of its applications

Question : Explain the principle and working of a biogas plant. Draw neat diagram of a biogas plant and label (i)inlet of slurry (ii) digester and (iii) gas outlet

Question : Describe how a hydropower plant produces electricity .Write any two advantages of hydroelectric energy.

Question :   What causes the wind to blow? Explain the principle of working of a windmill.

Question : How will you demonstrate that thermal energy is converted into electricity energy?

Question :   Describe in brief how OTEC power plants can be used to generate electricity.

Question :   What is geothermal energy?

Question : What are the limitations of the energy that can be obtained from the oceans?

Question : List three factors responsible for the wind .State three limitations in harnessing wind energy.

Question : What are the hot spots inside earth’s crust?

Question : Give two advantages of using nuclear energy.

Question : a)What is nuclear fusion ? Give an example for it

b)What is nuclear fission ? Give an example for it

Question : The solar constant at a place is 1.4 KW/m2 .How much solar energy will be received at this place per second over an area of 5 m2.

Question : Calculate the heat energy by 5 m2 area on the earth’s surface in 1 minute ,assume that 47% of the solar energy strike earth’s surface. 

Free study material for Science

Exam Preparation Worksheet for Class 10 Science Chapter 14 Sources of Energy

Chapter 14 Sources of Energy Printable Worksheet for Class 10 Science

Review targeted practice exercises for Class 10 Science Chapter 14 Sources of Energy. Curated to match official CBSE guidelines, these downloadable PDF sheets support daily revision and core concept reinforcement.

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Built using the official NCERT book for Class 10 Science, these practice materials provide reliable academic guidance. Pair your practice with our recommended NCERT solutions to master optimal problem-solving approaches.

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FAQs

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Are these Science Class 10 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 10 Physics Source of Energy Worksheet includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 10.

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Daily practice with these Science worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 10 students get more marks in CBSE exams.

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