10th Class Social Science Minerals and Energy Resources / खनिज और ऊर्जा संसाधन Minerals and Energy Resources - Important Terms And Concepts

Minerals and Energy Resources

Important Terms And Concepts

1.        Biogas. Energy produced by using shrubs, farm waste, animal and human wastes.

2.        Conventional Sources of Energy. Traditional sources of energy like coal, petroleum, natural gas.

3.        Geologists. Experts who study about rocks, their age, formation of minerals and physical and chemical composition.

4.        Minerals. Naturally   occurring substances on the earth's surface having a definite chemical composition.

5.        Mineral Ore. Minerals from which metals are extracted in a raw state from the earth.

6.        Non-conventional Sources of Energy. Renewable sources of energy which are recently developed like solar, wind, tidal, etc.

7.        Open Cast Mining. A method of mining by removing the overlying materials to extract the minerals from shallow depth.

8.        Mining. An economic activity which deals with profitable extraction of minerals.

9.        Placer Deposits. Minerals which occur as alluvial deposits brought down by the rivers such as gold, silver, tin, etc.

10.        Rocks. Natural substances which consists of one or more minerals.

11.        Robber Industry. Minerals once mined cannot be replaced and are exhausted and hence is known as 'robber industry'.

12.        Shaft Mining. A method of mining where vertical and horizontal shafts are made to extract the minerals from deep under the earth.