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प्रश्न
Electricity is very important for all of us. We need it for our homes, offices, industries, and agriculture.
Make a list of five different ways in which you can save electricity, for instance, switching off fans, ACs, light at home, and in school when these things are not required.
उत्तर
The ways in which we can save electricity are :
- Using natural light whenever possible instead of using artificial light
- Replacing our bulb with CFL or LED bulbs.
- Turn off the lights wherever it is not required.
- By unplugging the appliances that are not in use.
- Replacing old appliances with new energy-saving models.
- Using less air conditioner and less hot water.
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संबंधित प्रश्न
Discuss the ways by which you can conserve energy, especially petroleum and electricity, in your homes and school. What changes do you need to make in your daily routine to save these precious resources?
Hydroelectricity is considered a good energy option for the future. Why?
Fill in the blank
Geothermal energy is the heat of the _______.
Match the following.
| Column A | Column B |
| 1. Solar energy | (i) Ganga |
| 2. Hydroelectricity | (ii) Windmill |
| 3. Coal | (iii) Sun |
| 4. Wind | (iv) Non-renewable |
| 5. Farakka barrage | (v) Water |
What is tidal energy?
Which countries are major producers of wind power in the world?
What is biogas? How is it useful to us?
Explain briefly geothermal energy.
On the outline map of India given here, mark and name any five hydroelectric projects in India.
Where does your water come from?
Each city has a different source for its water supply like reservoirs, rivers, or wells. Find out where your town or city gets its supply of water from.
