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 population pyramids? How do they help in understanding about the population of a country?
Q 2.
What are the four Characteristics of resources?
Q 3.
Give a brief note on mining.
Q 4.
Name the fibre crops and name the climatic conditions required for their growth.
Q 5.
Rows of trees planted in the coastal areas to check the wind movement is called intercropping ?
Q 6.
Mention some methods that are used to conserve soil
Q 7.
What is plantation agriculture?
Q 8.
Write a brief note on terrace farming and intercropping.
Q 9.
What is sustainable development?
Q 10.
Differentiate between Ubiquitous and localised resources?
Q 11.
Why are human resources important?
Q 12.
The world population has grown very rapidly. Why?
Q 13.
Name any two steps that government has taken to conserve plants and animals.
Q 14.
What are the similarities between information technology industries in Bangalore and California?
Q 15.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 16.
What are the activities under the secondary sector?
Q 17.
What is mixed cropping or mixed farming?
Q 18.
What are the different characteristics of population composition?
Q 19.
Discuss the role of any two factors influencing population change.
Q 20.
Write any two reasons for land degradation today?
Q 21.
Mention the different types of resources.
Q 22.
What are abiotic resources?
Q 24.
Different crops are grown in different regions.
Q 25.
Distinguish between Metallic and non metallic minerals
Q 26.
Name the 3 sectors of activities done by people.
Q 27.
What are the different kinds of cultivation?
Q 28.
How is farming classified?
Q 29.
What is the difference between Subsistence farming and Commercial farming?
Q 30.
What do the 3Rs stand for in context with conservation of natural resources?
Q 31.
What is wind power?
Q 32.
What are the methods that can be adapted to contain landslides?
Q 33.
Give a brief description of soil composition or the layers of soil ?
Q 34.
What are the causes for the destruction of natural vegetation and wildlife?
Q 35.
What is the average density of population in India?
Q 36.
What is shifting cultivation? What are its disadvantages?
Q 37.
Why people are considered a resource?
Q 38.
What is meant by the term industry?
Q 39.
Why cotton textile industry rapidly expanded in Mumbai?
Q 40.
Give Reason for Environmental aspects must be carefully looked into before building huge dams.
Q 41.
Write a brief note on wind power ?
Q 42.
Write a brief note on Renewable resources ?
Q 43.
How was the word agriculture, coined?
Q 44.
How are mineral extracted from earth?
Q 45.
Name the different rocks that minerals occur in?
Q 46.
What are the factors that determine the pattern in which a particular region is used?
Q 47.
What is a water-cycle?
Q 48.
What is agriculture?
Q 49.
Distinguish between the followings.
Primary activities and tertiary activities.
Q 50.
Name any three common minerals used by you every day.
