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Minerals and Energy Resources
What are the two main ways of generating electricity? How are they different from each other? Explain.
Electricity is generated mainly in two ways-
(i) Hydro electricity is generated by fast flowing running water, which is a renewable resource. India has a number of multi-purpose projects like the Bhakra Nangal, Damodar Valley Corporation etc. producing hydroelectric power.
(ii) Thermal electricity is generated by burning fuels such as coal, petroleum and natural gas. The thermal power stations use non-renewable fossil fuels for generating electricity.There are over 310 thermal power plants in India.
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Distinguish between the following in not more than 30 words.
Ferrous and Non-ferrous minerals.
Distinguish between the following in not more than 30 words.
conventional and non-conventional sources of energy.
What is a mineral?
How are minerals formed in igneous and metamorphic rocks?
Why do we need to conserve mineral resources?
Describe the distribution of coal in India.
Why do you think that solar energy has a bright future in India?
Fill the name of the correct mineral in the crossword below:
Across:
1. A ferrous mineral (9)
2. Raw material for cement industry (9)
3. Finest iron-ore with magnetic properties (9)
4. Highest quality hard coal (10)
5. Aluminium is obtained from this ore (7)
6. Khetri mines are famous for this mineral (6)
7. Formed due to evaporation (6)
Down:
1. Found in placer deposit (4)
2. Iron-ore mined in Bailadila (8)
3. Indispensable for electrical industry (4)
4. Geological Age of coal found in north east India (8)
5. Formed in veins and lodes (3)
Why is mica used in toothpaste?
Which one of the following is the hardest mineral?
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