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.
Mention some methods that are used to conserve soil
Q 2.
What are population pyramids? How do they help in understanding about the population of a country?
Q 3.
What are the four Characteristics of resources?
Q 4.
Which sources of energy would you suggest for (a) rural areas (b) coastal areas (c) Arid Regions?
Q 5.
What is Nomadic herding?
Q 6.
Name the fibre crops and name the climatic conditions required for their growth.
Q 7.
Name any two steps that government has taken to conserve plants and animals.
Q 8.
Name any three common minerals used by you every day.
Q 9.
Different crops are grown in different regions.
Q 10.
Discuss the role of any two factors influencing population change.
Q 11.
What are natural resources?
Q 12.
Write a brief note on terrace farming and intercropping.
Q 13.
What are the different characteristics of population composition?
Q 14.
What is resource conservation?
Q 15.
Differentiate between Ubiquitous and localised resources?
Q 16.
Complete the sentences below using some of the following words, sparsely, favourable, fallow, artificial, fertile, natural, extreme, densely
Q 17.
Write any two reasons for land degradation today?
Q 18.
What is meant by the term industry?
Q 19.
Distinguish between Metallic and non metallic minerals
Q 20.
What are the different kinds of cultivation?
Q 21.
Give a brief note on mining.
Q 22.
What is a water-cycle?
Q 23.
Give Reason for Environmental aspects must be carefully looked into before building huge dams.
Q 24.
Write a brief note on Renewable resources ?
Q 25.
What are the advantages in mixed cropping?
Q 27.
Write a brief note on the Ministry of Human Resource Development in India.
Q 28.
What is shifting cultivation? What are its disadvantages?
Q 29.
Distinguish between the followings.
Primary activities and tertiary activities.
Q 30.
What is meant by population composition?
Q 31.
Rows of trees planted in the coastal areas to check the wind movement is called intercropping ?
Q 32.
Which are the main factors which influence the location of an industry?
Q 33.
Why cotton textile industry rapidly expanded in Mumbai?
Q 34.
Resources have value- discuss ?
Q 35.
How can one increase agricultural production?
Q 36.
How are mineral extracted from earth?
Q 37.
Name the different rocks that minerals occur in?
Q 38.
What are the two main classifications of power resources?
Q 39.
How does land fulfil our needs?
Q 40.
What are the methods that can be adapted to contain landslides?
Q 41.
Give a brief description of soil composition or the layers of soil ?
Q 42.
What are the causes for the destruction of natural vegetation and wildlife?
Q 43.
What is plantation agriculture?
Q 44.
The world population has grown very rapidly. Why?
Q 45.
Which are the two main climatic factors responsible for soil formation?
Q 46.
Which industry is often referred to as the backbone of modem industry and why?
Q 47.
Distinguish between the followings
(i) Agro-based and mineral based industry.
Q 48.
What is an ore? Where are the ores of metallic minerals generally located?
Q 49.
Distinguish between Biogas and natural gas
Q 50.
Write a note on Munna Lai and his farm land.
