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.
Resources
Q 1.
What are the four Characteristics of resources?
Q 2.
Name the fibre crops and name the climatic conditions required for their growth.
Q 3.
Give a brief note on mining.
Q 4.
Write a brief note on terrace farming and intercropping.
Q 5.
What are population pyramids? How do they help in understanding about the population of a country?
Q 6.
Mention some methods that are used to conserve soil
Q 7.
What is plantation agriculture?
Q 8.
Rows of trees planted in the coastal areas to check the wind movement is called intercropping ?
Q 9.
What are the different characteristics of population composition?
Q 10.
Differentiate between Ubiquitous and localised resources?
Q 11.
The world population has grown very rapidly. Why?
Q 12.
Name any two steps that government has taken to conserve plants and animals.
Q 13.
Mention the different types of resources.
Q 14.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 15.
What is mixed cropping or mixed farming?
Q 16.
Name any three common minerals used by you every day.
Q 17.
Name the factors influencing agriculture?
Q 18.
Discuss the role of any two factors influencing population change.
Q 19.
What is meant by the term industry?
Q 20.
What are natural resources?
Q 21.
What is a water-cycle?
Q 22.
What are the causes for the destruction of natural vegetation and wildlife?
Q 23.
What is the average density of population in India?
Q 24.
What is sustainable development?
Q 25.
Different crops are grown in different regions.
Q 26.
Write any two reasons for land degradation today?
Q 27.
What is the difference between Subsistence farming and Commercial farming?
Q 28.
How can one increase agricultural production?
Q 29.
What is wind power?
Q 30.
Write a brief note on the Ministry of Human Resource Development in India.
Q 31.
Distinguish between Metallic and non metallic minerals
Q 32.
Resources have value- discuss ?
Q 33.
How is farming classified?
Q 34.
What is Nomadic herding?
Q 35.
What are the advantages in mixed cropping?
Q 36.
Write a note on Munna Lai and his farm land.
Q 37.
Name a few landforms.
Q 38.
Give a brief description of soil composition or the layers of soil ?
Q 39.
Sixty per cent of the world's people stay in just 10 countries. Name the countries with the percentage of world population.
Q 40.
Why is population growth slowing in united Kingdoms?
Q 41.
What is shifting cultivation? What are its disadvantages?
Q 42.
Write a brief note on wind power ?
Q 43.
What are abiotic resources?
Q 44.
What can we do to conserve resources?
Q 45.
What are the activities under the secondary sector?
Q 46.
What are the classifications of minerals?
Q 47.
How are mineral extracted from earth?
Q 48.
Name the different rocks that minerals occur in?
Q 49.
What are the factors that determine the pattern in which a particular region is used?
Q 50.
What is resource conservation?
