Class 10 SEBA Science Chapter 14 Solutions – Sources of Energy (2026–27) | Assam Eduverse
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SEBA Class 10 Science Chapter 14 Sources of Energy solutions are prepared by Assam Eduverse strictly according to the latest SEBA / ASSEB syllabus 2026–27. These SEBA Class 10 Science Chapter 14 Sources of Energy solutions are created for students searching specifically for SEBA Class 10 Science Chapter 14 Sources of Energy solutions that are accurate, updated, and exam-oriented. This page provides complete SEBA Class 10 Science Chapter 14 Sources of Energy solutions, making it a trusted source for SEBA Class 10 Science Chapter 14 Sources of Energy solutions based on the official SEBA Class 10 Science textbook.
The SEBA Class 10 Science Chapter 14 Sources of Energy solutions explain all concepts included in SEBA Class 10 Science Chapter 14 Sources of Energy solutions, such as renewable and non-renewable sources of energy, thermal power plants, hydroelectric power, solar energy, wind energy, biogas, nuclear energy, and advantages and disadvantages of various energy sources. These SEBA Class 10 Science Chapter 14 Sources of Energy solutions help students understand definitions, comparisons, and diagrams using SEBA Class 10 Science Chapter 14 Sources of Energy solutions written in simple and exam-friendly language, following the ASSEB Class 10 Science Chapter 14 solutions format.
With the complete SEBA Class 10 Science Chapter 14 Sources of Energy solutions (2026–27), students can prepare SEBA Class 10 Science Chapter 14 Sources of Energy solutions for intext questions and SEBA Class 10 Science Chapter 14 Sources of Energy solutions for chapter-end textbook exercise questions. These SEBA Class 10 Science Chapter 14 Sources of Energy solutions include important renewable energy questions, comparisons, and exam-focused explanations. Assam Eduverse ensures every SEBA Class 10 Science Chapter 14 Sources of Energy solution is syllabus-based and exam-focused.
SEBA / ASSEB Class 10 Science Chapter 14 – Sources of Energy Intext Questions & Answers (Latest Syllabus 2026–27)
📝 Page 243
Q1: What is a good source of energy?
Answer: A good source of energy is one that:
- Produces a large amount of heat per unit mass
- Is easily accessible
- Is easy to store and transport
- Is economical and eco-friendly
Q2: What is a good fuel?
Answer: A good fuel has the following characteristics:
- High calorific value
- Burns efficiently without producing much smoke
- Is easy to store and transport
- Is economical
Q3: If you could use any source of energy for heating your food, which one would you use and why?
Answer: I would use LPG (Liquefied Petroleum Gas) because it is clean, efficient, easy to use, and does not produce smoke or ash.
📝 Page 248
Q1: What are the disadvantages of fossil fuels?
Answer: Disadvantages of fossil fuels are :
- Cause air pollution
- Produce greenhouse gases like CO₂
- Are non-renewable and depleting rapidly
- Cause acid rain due to sulfur emissions
Q2: Why are we looking at alternate sources of energy?
Answer: We are looking at alternate energy sources because fossil fuels are limited, polluting, and unsustainable. Alternative sources like solar, wind, and hydropower are cleaner and renewable.
Q3: How has the traditional use of wind and water energy been modified for our convenience?
Answer: Traditional uses have been modified by developing wind turbines and hydroelectric power stations to efficiently convert kinetic energy into electricity on a larger scale.
📝 Page 253
Q1: What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?
Answer: A concave mirror is best suited because it converges sunlight to a single focal point, increasing the temperature efficiently.
Q2: What are the limitations of the energy that can be obtained from the oceans?
Answer: Limitations of ocean energy are :
- High installation costs
- Technology still developing
- Not suitable for all geographic locations
Q3: What is geothermal energy?
Answer: Geothermal energy is the heat energy from Earth’s interior used for generating electricity or direct heating applications.
Q4: What are the advantages of nuclear energy?
Answer: Advantages of nuclear energy are :
- High energy output
- No greenhouse gas emissions
- Efficient and long-lasting
📝 Page 253
Q1: Can any source of energy be pollution-free? Why or why not?
Answer: Most energy sources have some environmental impact. However, sources like solar, wind, and tidal energy are nearly pollution-free during usage, though their manufacturing or installation may cause some pollution.
Q2: Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?
Answer: Yes, hydrogen is cleaner because it produces only water on combustion. However, storage and transport of hydrogen are difficult compared to CNG.
📝 Page 254
Q1: Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Answer:
(i) Energy derived from biomass is a renewable source of energy because waste products are continuously produced. Plants and trees are also grown at reasonable intervals.
(ii) The energy derived from flowing water, wind, sun and ocean are renewable sources because these sources can be harnessed into energy so long as the present solar system exists.
Q2: Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Answer:
Fossil fuels like coal and petroleum are exhaustible sources of energy. The estimated reserves of these fuels are said to last us for about another 200 years, while it takes millions of years for these to be formed.
SEBA Class 10 Science Chapter 14 – Sources of Energy Textbook Exercise Questions & Solutions | 2026–27
Q1. A solar water heater cannot be used to get hot water on:
(a) a sunny day. (b) a cloudy day.(c) a hot day. (d) a windy day
Answer: (b) a cloudy day.
Explanation: Solar heaters need sunlight. On cloudy days, sunlight is weak or absent, so the heater doesn’t work effectively.
Q2. Which of the following is not an example of a bio-mass energy source?(a) wood (b) gobar-gas
(c) nuclear energy (d) coal
Answer: (c) nuclear energy
Explanation: Nuclear energy comes from radioactive materials, not from plants or animal waste like other biomass sources.
Q3. Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?
a) geothermal energy (b) wind energy
(c) nuclear energy (d) bio-mass.
Answer: (a) geothermal energy
Explanation: Geothermal energy comes from heat inside the Earth, not from the Sun.
Q4. Compare and contrast fossil fuels and the Sun as direct sources of energy.
Answer:
Fossil Fuels: Non-renewable, cause pollution, limited supply, easy to store and use.
Sun: Renewable, clean, unlimited supply, depends on weather and daytime.
Q5. Compare and contrast biomass and hydroelectricity as sources of energy.
Answer:
- Biomass: Made from organic waste, renewable, causes some pollution.
- Hydroelectricity: Produced from water flow, renewable, clean, needs dams and large water sources.
Q6. Limitations of extracting energy from:
(a) Wind: Needs large open areas, not always windy, expensive setup.
(b) Waves: Technology still developing, not suitable everywhere.
(c) Tides: Works only in coastal areas with suitable tidal range.
Q7. On what basis would you classify energy sources as:
(a) Renewable and non-renewable?
- Renewable: Replenished naturally (e.g., solar, wind).
- Non-renewable: Limited supply (e.g., coal, petroleum).
(b) Exhaustible and inexhaustible?
- Exhaustible: Can run out (e.g., fossil fuels).
- Inexhaustible: Cannot run out (e.g., sunlight).
Are the options the same?
Not exactly. Renewable/inexhaustible are often similar, but exhaustibility focuses more on quantity and usage.
Q8. What are the qualities of an ideal source of energy?
Answer:
- Easily available
- Renewable
- Low cost
- Eco-friendly (non-polluting)
- High energy output
Q9. Advantages and disadvantages of using a solar cooker. Are there places where it has limited use?
Answer:
- Advantages: No pollution, saves fuel, free energy from Sun.
- Disadvantages: Works only in sunlight, slow cooking, can’t be used at night or on cloudy days.
- Limited Utility: In rainy, cold, or cloudy regions.
Q10. What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?
Answer: Environmental Consequences:
- Air Pollution – Fossil fuels release harmful gases.
- Global Warming – Increased CO₂ raises Earth’s temperature.
- Climate Change – Causes floods, droughts, and rising sea levels.
- Acid Rain – Damages soil, crops, and water bodies.
- Resource Depletion – Overuse of coal, oil, and natural gas.
Steps to Reduce Energy Consumption:
- Use Efficient Appliances – Like LEDs and 5-star rated devices.
- Shift to Renewables – Solar, wind, and hydro energy.
- Use Public Transport – Reduces fuel use and emissions.
- Switch Off Devices – Avoids unnecessary power usage.
- Spread Awareness – Promote energy-saving habits.
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