Imp Questions For All Chapters – General Science Class 6
Work and Energy
Short Questions
1. What is work?
Answer : When a force moves an object, work is done.
2. What is energy?
Answer : The capacity to do work.
3. What are the two types of mechanical energy?
Answer : Kinetic energy and potential energy.
4. Which energy makes plants grow?
Answer : Light energy (from the sun).
5. What is the unit of energy?
Answer : Joule.
6. Which energy is used to cook food in a solar cooker?
Answer : Heat energy.
7. What is kinetic energy?
Answer : Energy of a moving object.
8. What is potential energy?
Answer : Energy stored due to position or shape.
9. Which energy makes a fan rotate?
Answer : Electrical energy.
10. Which fuel is used in cars?
Answer : Petrol or diesel.
11. What is sound energy?
Answer : Energy produced by vibrations.
12. What are non-renewable energy sources?
Answer : Coal, petrol, diesel, natural gas.
13. Name one renewable energy source.
Answer : Solar energy.
14. Why should we save energy?
Answer : To protect resources and reduce pollution.
15. What is green energy?
Answer : Energy that does not cause pollution.
Long Questions
1. What is displacement?
Answer : When an object changes its position due to an applied force, it is called displacement.
2. What is the difference between kinetic and potential energy?
Answer : Kinetic energy is the energy of moving objects, while potential energy is stored energy due to position.
3. What are the different forms of energy?
Answer : The different forms of energy are mechanical, heat, light, sound, chemical, and electrical energy.
4. How does a hydroelectric power plant generate electricity?
Answer : Water stored in a dam flows down and rotates turbines, which produce electricity.
5. Why should we use non-conventional energy resources?
Answer : They are renewable, eco-friendly, and do not get exhausted like coal and petrol.
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