Class 10 Science 2 Chapter 5 Towards Green Energy Worksheet
Maharashtra SSC Board important questions, energy transformations, power generation, renewable energy and previous exam questions
Class 10 Towards Green Energy Worksheet
This Class 10 Science 2 Chapter 5 Towards Green Energy Worksheet follows the Maharashtra State Board Science and Technology Part 2 syllabus. It provides structured practice for unit tests, school examinations, preliminary examinations and the Maharashtra SSC Board examination.
The worksheet contains Maharashtra State Board exam important questions, MCQs, one-word answers, matching pairs, diagram-based questions, scientific reasons, comparisons and detailed answers. Selected previous board exam questions are included with their examination-year labels, making the worksheet useful as an SSC question bank.
Students revise thermal, nuclear and hydroelectric power generation along with solar and wind energy. Questions help students trace energy transformations, compare advantages and limitations and explain why cleaner energy and energy conservation are important.
SSC Board Questions
Practise scientific reasons, diagrams, energy-conversion sequences and comparison-based questions.
Energy Transformations
Follow each method from its original energy source to the production of electricity.
Answer Key Included
Check processes, advantages, limitations and scientific explanations.
What Is Included in the Worksheet?
- Multiple-choice questions with properly arranged options
- Fill in the blanks, matching pairs and odd-one-out questions
- Energy-transformation sequences
- Thermal and nuclear power plant questions
- Hydroelectric power plant diagrams
- Solar photovoltaic and solar thermal comparisons
- Wind-energy questions
- Environmental-impact questions
- Energy-conservation activities
- Maharashtra SSC Board important questions
- Selected previous Board questions with year labels
Thermal Power Generation
In a thermal power station, fuel such as coal is burned to produce heat. This heat converts water into high-pressure steam. The steam rotates a turbine connected to a generator, which produces electrical energy.
Environmental Effects
- Release of carbon dioxide
- Air pollution from smoke, ash and gases
- Damage caused by mining activities
- Large quantities of ash requiring safe disposal
- Consumption of non-renewable fuel
Nuclear Power Generation
A nuclear power plant uses heat released during controlled nuclear fission. The heat produces steam, which rotates a turbine connected to an electrical generator.
Nuclear power can generate a large amount of electricity from a comparatively small quantity of fuel. However, radiation safety and the long-term management of radioactive waste are essential.
Hydroelectric Power
Water stored behind a dam possesses gravitational potential energy. When released, moving water rotates a turbine connected to a generator.
Advantages
- Uses the renewable water cycle
- Does not require fuel combustion during operation
- Can respond to changes in electricity demand
Limitations
- Large areas may be submerged
- Communities may require rehabilitation
- River ecosystems can be affected
- Generation depends on water availability
Solar Energy
Solar Photovoltaic Cells
A photovoltaic cell converts solar energy directly into electrical energy. Multiple cells are connected to form a solar panel.
Solar Thermal Power
Solar thermal systems first convert solar energy into heat. The heat may be used to produce steam, which rotates a turbine connected to a generator.
Wind-Energy Generation
Moving air possesses kinetic energy. Wind rotates turbine blades, and the rotating shaft drives a generator to produce electricity.
Wind power does not require fuel combustion during operation. However, production depends on wind speed and suitable geographical locations.
Common Mistakes Students Should Avoid
- Writing that a turbine itself produces electricity
- Confusing photovoltaic and solar thermal power
- Writing that every renewable source has no environmental effect
- Writing nuclear fission as combustion
- Forgetting the turbine stage in thermal and nuclear plants
- Writing an incomplete energy-transformation sequence
Check the Complete Towards Green Energy Solutions
Use the detailed Chapter 5 solutions to check worksheet answers and revise power generation, renewable resources and energy transformations.
View Chapter 5 SolutionsFrequently Asked Questions
What is green energy?
Green energy is energy obtained from sources that cause comparatively less environmental damage. Solar and wind energy are common examples.
How is electricity generated in a thermal power station?
Fuel heats water to produce steam. The steam rotates a turbine connected to a generator, which produces electricity.
What is the difference between photovoltaic and solar thermal power?
Photovoltaic cells convert sunlight directly into electricity. Solar thermal systems first convert sunlight into heat and may then use steam and a turbine.
Why is hydroelectricity considered renewable?
It uses flowing water replenished through the natural water cycle. However, large dams can still affect rivers, habitats and communities.
Why is wind power variable?
Wind speed changes with time and location. Electricity production therefore varies and may require storage or support from other energy sources.
Is nuclear energy renewable?
Nuclear energy is generally classified as non-renewable because it uses limited nuclear fuels. It also requires careful radioactive-waste management.
Does this worksheet contain Maharashtra Board questions?
Yes. It contains Maharashtra SSC important questions, MCQs, diagrams, energy transformations and selected previous exam questions with year labels.
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