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.
Which are the two main climatic factors responsible for soil formation?
Q 3.
Write a brief note on Intensive subsistence farming.
Q 4.
Which industry is often referred to as the backbone of modem industry and why?
Q 5.
What is Nomadic herding?
Q 6.
What is meant by the term industry?
Q 7.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 8.
Name any three common minerals used by you every day.
Q 10.
What is mixed cropping or mixed farming?
Q 11.
In India agriculture is a primary activity.
Q 12.
Different crops are grown in different regions.
Q 13.
Human interference and changes of climate can maintain the ecosystem ?
Q 14.
Distinguish between Ferrous and nonferrous minerals
Q 15.
Name the 3 sectors of activities done by people.
Q 16.
Mention a few minerals and their uses.
Q 17.
What are the two main classifications of power resources?
Q 18.
Give a brief description of soil composition or the layers of soil ?
Q 19.
Write a brief note on the Ministry of Human Resource Development in India.
Q 20.
Differentiate between emigrants and immigrants.
Q 21.
Why are resources distributed unequally over the earth?
Q 22.
Why people are considered a resource?
Q 23.
Discuss the role of any two factors influencing population change.
Q 24.
Distinguish between Conventional and non conventional sources of energy
Q 25.
Distinguish between Biogas and natural gas
Q 26.
Resources have value- discuss ?
Q 27.
Name a few landforms.
Q 28.
Write a brief note on terrace farming and intercropping.
Q 29.
What are the causes for the destruction of natural vegetation and wildlife?
Q 30.
Why is population growth slowing in united Kingdoms?
Q 31.
Distinguish between the followings.
Primary activities and tertiary activities.
Q 32.
The world population has grown very rapidly. Why?
Q 33.
How can one increase agricultural production?
Q 34.
How are mineral extracted from earth?
Q 35.
Mention some methods that are used to conserve soil
Q 36.
What are bio reserves?
Q 37.
Name any two steps that government has taken to conserve plants and animals.
Q 38.
Give Reason for Environmental aspects must be carefully looked into before building huge dams.
Q 39.
Give reason for Petroleum is referred to as black gold.
Q 40.
What are the four Characteristics of resources?
Q 41.
What can we do to conserve resources?
Q 42.
Give a brief note on mining.
Q 43.
Why are human resources important?
Q 44.
Differentiate between Ubiquitous and localised resources?
Q 45.
What is plantation agriculture?
Q 46.
Name the fibre crops and name the climatic conditions required for their growth.
Q 47.
What is an ore? Where are the ores of metallic minerals generally located?
Q 48.
What is a resource?
Q 49.
What are abiotic resources?
Q 50.
Write a brief note on Renewable resources ?
