Geography

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Question:

Give a brief note on mining.

Answer:

The process of taking out minerals from rocks buried under the earths surface is called mining. Mining can be classified into Open-cast mining and shaft mining.

Open-cast mining, refers to a method of extracting rock or minerals from the earth by their removal from an open pit or borrow. Open-pit mines are used when deposits of commercially useful minerals or rock are found near the surface.

Shaft mining refers to the method of sinking a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom. The shafts have to be made to reach mineral deposits that lie at great depths.

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Resources

Q 1.

What are population pyramids? How do they help in understanding about the population of a country?

Q 2.

What is a water-cycle?

Q 3.

Distinguish between Ferrous and nonferrous minerals

Q 4.

What can we do to conserve resources?

Q 5.

What are the advantages in mixed cropping?

Q 6.

Name any three common minerals used by you every day.

Q 7.

Resources have value- discuss ?

Q 8.

What is meant by arable land?

Q 9.

Differentiate between Ubiquitous and localised resources?

Q 10.

What are the four Characteristics of resources?

Q 11.

How was the word agriculture, coined?

Q 12.

What is Nomadic herding?

Q 13.

What are natural resources?

Q 14.

Rows of trees planted in the coastal areas to check the wind movement is called intercropping ?

Q 15.

Mention the different types of resources.

Q 16.

Give Reason for Environmental aspects must be carefully looked into before building huge dams.

Q 17.

Give reason for Most industries are concentrated around coal mines.

Q 18.

Name the 3 sectors of activities done by people.

Q 19.

What are the classifications of minerals?

Q 20.

Why are resources distributed unequally over the earth?

Q 21.

What is plantation agriculture?

Q 22.

The world population has grown very rapidly. Why?

Q 23.

Complete the sentences below using some of the following words, sparsely, favourable, fallow, artificial, fertile, natural, extreme, densely

Q 24.

Human interference and changes of climate can maintain the ecosystem ?

Q 25.

Give five ways in which you can save energy at home.

Q 26.

What is a mineral?

Q 27.

What are the two main classifications of power resources?

Q 28.

What is biogas?

Q 29.

Give a brief description of soil composition or the layers of soil ?

Q 30.

Mention some methods that are used to conserve soil

Q 31.

What are bio reserves?

Q 32.

What is population study known as?

Q 33.

Why is population study essential?

Q 34.

What is the average density of population in India?

Q 35.

Why are human resources important?

Q 36.

What is meant by population composition?

Q 37.

Which industry is often referred to as the backbone of modem industry and why?

Q 38.

What are the similarities between information technology industries in Bangalore and California?

Q 39.

Write a brief note on wind power ?

Q 40.

Write a brief note on Renewable resources ?

Q 41.

What are the activities under the secondary sector?

Q 42.

Write a brief note on Intensive subsistence farming.

Q 43.

What are the 3 categories of Commercial farming?

Q 44.

How can one increase agricultural production?

Q 45.

Write a note on Munna Lai and his farm land.

Q 46.

Name the different rocks that minerals occur in?

Q 47.

What do the 3Rs stand for in context with conservation of natural resources?

Q 48.

Write a brief note on the Ministry of Human Resource Development in India.

Q 49.

Sixty per cent of the world's people stay in just 10 countries. Name the countries with the percentage of world population.

Q 50.

What are the different characteristics of population composition?