C. Give short answers for the following questions.
1. What are the main characteristics of minerals?
2. How did minerals influence the history of human civilization?
3. Why is petroleum called 'black gold?
4, How can we conserve minerals and power resources?
D. Give long answers for the following questions.
1. Explain the methods of mineral extraction.
2. What are minerals? Discuss different types of minerals on the
of their composition in detail.
3. Discuss non-conventional power sources.
4. Write a short note on 'Energy needs of the future'.
45. Why are minerals mined only in those regions where they
6. Why do you think the conventional
Answers
Answer:
1. Most minerals can be characterized and classified by their unique physical properties: hardness, luster, color, streak, specific gravity, cleavage, fracture, and tenacity.
2. Ancient human civilizations have largely been determined by the use of minerals For example- Stone age, Bronze age and iron age. The phase of industrilization is characterized by the use of minerals which contributed to such a change. Energy needs in the present scenerio determines much of the countries interaction.
3. This is because when crude oil is extracted from the land it is black in color. This resource is compared to gold due to its valuable properties and worth too.
4. People can conserve mineral resources by utilizing renewable resources. For example, using hydroelectricity and solar power as sources of energy may conserve mineral resources such as coal. There is a great scope for the expansion of several mineral-based industries which open the new vista for economic development.
Explanation:
this is according to my book, hope it can help:)