CBSE · Class 10 · Science · Sources of EnergyWhat are the characteristics of a good source of energy? Differentiate between renewable and non-renewable sources of energy with examples.
Step-by-Step Solution
Characteristics of a Good Source of Energy\nA good source of energy must possess the following essential characteristics:
- High Energy Output: It should release a large amount of useful work per unit mass or volume consumed (high calorific value).
- Ease of Transportation: It should be easy and safe to store and transport from its source of production to the end-users.
- Economic Feasibility: It should be easily accessible and economical or cost-effective for everyday use.
- Pollution-Free: It should burn cleanly without producing harmful residues, toxic gases, or contributing heavily to environmental pollution.
- Safe Handling: It should not pose severe safety hazards during extraction, storage, and utilization.
Difference Between Renewable and Non-Renewable Sources of Energy
| Feature | Renewable Sources of Energy | Non-Renewable Sources of Energy |
|---|---|---|
| Definition | Sources that are inexhaustible and can be replenished naturally over a short period of time. | Sources that are limited in reserve and take millions of years to form once depleted. |
| Availability | Abundantly available in nature and will not run out in the foreseeable future. | Finite and will eventually get exhausted completely with continued consumption. |
| Environmental Impact | Generally clean and eco-friendly, producing little to no greenhouse gases. | Highly polluting, releasing carbon dioxide, sulfur dioxide, and other toxic pollutants. |
| Examples | Solar energy, wind energy, hydroelectric energy, biomass, and tidal energy. | Fossil fuels (coal, petroleum, natural gas) and nuclear fuels (uranium). |
| \nIn conclusion, transitioning from non-renewable to renewable energy sources is crucial for sustainable development and reducing global climate change. |
💡 Study Guide: This question tests core syllabus concepts from Sources of Energy. For formulas, key summaries, and mock exam reference guides, read the full Sources of Energy Revision Notes.