Short Questions
1. What are energy resources?
→ Energy resources are natural sources that provide power for daily activities.
2. What are the two types of energy resources?
→ Conventional energy and non-conventional energy.
3. Give two examples of conventional energy resources.
→ Coal and petroleum.
4. Give two examples of non-conventional energy resources.
→ Solar energy and wind energy.
5. Which fuel is used in vehicles?
→ Petrol, diesel, and CNG (Compressed Natural Gas).
6. What is the main use of firewood?
→ Firewood is used for cooking in villages.
7. Which resource is used for producing hydel power?
→ Water (from rivers and dams).
8. What is bio-gas made from?
→ Bio-gas is made from cow dung and plant waste.
9. Which energy resource is the most environment-friendly?
→ Solar energy.
10. What are windmills used for?
→ Windmills are used to generate electricity from wind energy.
11. Which country has large reserves of petroleum?
→ Saudi Arabia.
12. Why is coal an important energy resource?
→ Coal is used for electricity, industries, and steam engines.
13. How is geothermal energy produced?
→ It is produced from heat inside the Earth near hot water springs.
14. Which fuel is mostly used for cooking in cities?
→ LPG (Liquefied Petroleum Gas).
15. Why should we save energy resources?
→ Because they are limited, and we need them for the future.
Long Questions
1. What is the difference between conventional and non-conventional energy resources?
→ Conventional energy includes coal, petroleum, and natural gas, which can run out. Non-conventional energy like solar and wind power is renewable and eco-friendly.
2. Why is solar energy important?
→ Solar energy is renewable, pollution-free, and available everywhere. It is used for electricity, cooking, and heating water.
3. How does wind energy help in generating electricity?
→ Wind energy moves the blades of windmills, which run turbines to produce electricity.
4. What are the uses of petroleum?
→ Petroleum is used for fuel (petrol, diesel), making plastics, and generating electricity.
5. Why should we use environment-friendly energy sources?
→ They do not cause pollution, are renewable, and help protect nature.
6. What is the use of hydropower?
→ Hydropower is used to generate electricity by using water stored in dams.
7. How does bio-gas help in rural areas?
→ Bio-gas is used for cooking and lighting homes in villages, reducing firewood use.
8. How can we save energy in daily life?
→ We can save energy by using LED lights, switching off appliances, using public transport, and using solar energy.
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