ASSIGNMENT ON MINERALS AND ENERGY RESOURCES

Q1.Write properties of mica?
It is a mineral made of thin series of plates or leaves and can easily split into thin sheets.
b) it can be clear ,black, green, red yellow, or brown.
c) due to its di electric strength, low power loss factor, insulating properties and resistence to high voltage mica is used as an indispensable mineral in the electric and electronic industries.
Q2. Where are mica deposits are found?
A. They occur in the northern edge of the Chotanagpur plateau.
b)Jharkhand-- Koderma Gaya-Hazaribagh belt—the leading producer.
c) In Rajasthan- in Ajmer.
d)Andhra Preaesh-in Nellore belt.
Q3.where will we find limestone?
A. In association with rocks composed of calcium carbonates or calcium and calcium and magnesium carbonates.
It is found in sedimentary rocks of most geological formations.
Q4.What are uses of limestone?
Lime stone is the basic raw material for the cement industry and essential for smelting iron ore in the blast furnace.
Q5.What are the hazards posed by mining?
The impact of mining on the environment and the health of miners is very dangerous.
a)The dust and the noxious fumes inhaled by the miners make them vulnerable to pulmonary diseases.
b) Risk of collapse of mine roofs,
c) Inundation and fires in coal mines are a constant threat to the miners.
d) Water sources in the region get contaminated due to mining.
e) Dumping of wastes lead to degradation of land, soil, and air.
f)Industrial effluents also degrade the streams and rivers.
Q6.Why do we need to conserve minerals?
We need to conserve minerals because of the following reasons:
a)There is strong dependence of industry and agriculture upon mineral deposits & substances manufactured by them.
b)Minerals require millions of years to be created and concentrated ---the formation process is
slow in comparison to the rapid consumption.
c)Minerals are finite and non-renewable.
d)Continued extraction of ores leads to increasing costs as minerals are found in greater depth.
Q7.What efforts are being made to conserve minerals?
Concerted efforts are to be made in order to use our minerals resources in planned and sustained manner.
b)Improved technologies need to be constantly evolved to allow use of low grade ores at low cost.
c)Recycling of metals, using scrape metal, and other substitutes are the important steps in
conservation of minerals resources for the future.
Q8.What are energy resources and why do we need them?
Energy is capacity to do work, energy resources are those resources which produce energy.
Energy is required for all activities.
a) It is needed to cook, to provide light and heat.
b) To propel vehicles, and to drive machinery in industries.
Q9. Why conservation of energy resources is required?
Energy is the basic requirement for economic development.
b)Every sector—agriculture, industry, transport, commercial or domestic needs input of energy.
c)Various development plans require increasing amount of energy to remain operational.
d)Consumption of energy has been constantly rising.
Thus there is an urgent need to develop sustainable path of energy development.
Q10. List measures for conservation of energy?
A.-- Adopt a cautious approach for the judicious use of limited resources.
-- Concerened citizens should use public transport system,
--switch off electricity when not in use,
--use power saving devices and non-conventional sources of energy.

ASSIGNMENT ON MINERALS&ENERGY RESOURCES

ASSIGNMENT:
Q1. Write about the utility of manganese?
A. Manganese is used in the manufacturing of steel and ferrous-manganese alloy.
It is also used in manufacturing of bleaching powder, insecticides, and paints.
Q2. Which state is the largest producer of manganese ores in India.
A. Orissa, it accounts for one-third of the total production in India.
Q3.What are non-ferrous minerals? Why are they important?
A. Minerals which do not contain iron are called non-ferrous minerals. We do not have satisfactory reserves of these minerals but they play vital role in number of metallurgical, engineering and electrical industries. Some of such minerals are copper, bauxite, zinc, lead and gold.
Q4. Write properties of copper. Also write its utility.
A. It is malleable, ductile, and a good conductor of heat and electricity.
Utility—It is mainly used in electrical cables, electronics and chemical industries.
Q5. List the regions where copper is found.
A. a)The Balaghat mines in MP produce 52% of India’s copper.
b)The Singhbhum district of Jharkhand
c)The Khetri mines in Rajasthan.
Q6.Write a note on Bauxite.
A. Though several ores contain aluminium, it is from Bauxite that Alumina and Aluminium is obtained.
B. Bauxite deposits are found in the rocks rich in aluminium silicates.
C. Properties of aluminium: It is extremely light, combines the strength of metals, has good conductivity and great malleability.
Q7. Where do we find Bauxite deposits in India?
A. a) Deposits---mainly in Amarkantak pleatue, Maikal hills and pleatue regions of Bilaspur-Katni.
b) Orissa is the largest Bauxite producing state in India-45% of total production.
c) Panchpatmali deposits in Koraput district are important reserves.

Q8. What do you mean by non metallic minerals? Give some examples.
A. Minerals which do not contain metals or do not have metallic properties are called non metallic minerals. For example..mica, limestone, salt, potash, sulphur, granite, marble, sandstone, etc.

ASSIGNMENT ON MINERALS

Q1.What is rat hole mining?
A.Coal mining done by family members in a form of long narrow tunnel is known as rat hole mining. It is done in Jowai and Cherapunjee.
Q2.What is the difference between open pit mine and quarry?
A.Open pit mine is a large hole in the ground containing minerals, where as the quarry is an area or earth surface that has been dug up to obtain minerals.

Q3.How are the minerals distributed in India?
Minerals are very unevenly distributed in India. These variations exist because of the differences in the geological structure, processes and time involved in the formation of minerals.
a)Peninsular rocks contains reserves of coal, metallic minerals, mica, and many other non-metallic minerals.
b)Sedimentary rocks on the eastern and western flanks of peninsula—in Gujrat and Assam have petroleum deposits.
c)Rajasthan with the rock systems of peninsula has the deposits ofmany non-ferrous minerals.
d)Alluvial plains of north are devoid of minerals.
Q4.What factors are essential for the effective economic viability of a reserve?
Concentration of mineral the ore, the ease of extraction, and closeness to the market are the factors.
Q5.What is the importance of ferrous minerals?
Ferrous minerals account for three -fourth of total value of production of metallic minerals.
b) They provide strong base for the development of metallurgical industries.
c) India exports substantial quantity of ferrous minerals after meeting internal demands.
Q6.Iron ore is the basic mineral and backbone of the industrial development. Give reasons to prove the statement
Iron ore is of great utility to us as., all machines and machine parts are made of iron.
b) It is used to make bridges, buildings
c) it provides raw material to many industries
d) is also useful in making alloys.
Q7. Difference between hematite and magnetite.
Magnetite is the finest ore with 70% of iron content where as Hematite has lower iron content-50-60%.
b)Magnetite has excellent megnatic qualities and is important for electrical industry, whereas Hematite is important in terms of quantity.
Q8. List major iron ore belts of India.
The major iron ore belts are:
ORRISA-JHARKHAND BELT— Orissa-high grade ore is found in Badampahar mines in the Mayurbhanj and Kendujhar districts.
In Jharkhand — Singhbhum district, it is mined in Gua nad Noamundi.

visuals of open pit mines/quarry

Dear students take a look at these visuals for better understanding of the concepts.First two pictures are of QUARRY and other two are of OPEN PIT MINES.

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MINERALS AND ENERGY RESOURCES-ASSIGNMENT

Dear students this time I am furnishing you with not only the questions but with the answers too.Do make the best use of the same.
ASSIGNMENT
Q1.What is a mineral?
Ans. Mineral is a homogenous, naturally occurring substances with a definable internal structure.
Q2.What are rocks?
A. Rocks are the combinations of homogeneous substances called minerals.
Q3.Name a rock which consist of single mineral.
A. Limestone.
Q4.Write the factors on which formation of minerals depend?
Physical and chemical conditions.
Q5.What is the difference between a geographer and a geologist?
A.1.Geographer is the one who studies geography i.e.., the study of physical features of the earth and of human activity, where as a geologist is the one who studies geology that deals with the physical structure and substances of the earth.
2.Goegraphers study minerals as a part of the earth’s crust for better understanding of the landforms, distribution of resources and associated economic activities, where as the geologists are interested in the formation of the minerals ,their age & physical &chemical composition.
Q6.How are minerals found?
a.Minerals are found in the form of ores—an accumulation of any mineral mixed with other elements.
Q7. In which forms do the minerals occur?
A. Minerals occur in various forms as..
1. a)In Igneous and Metamorphic rocks: here they occur in cracks, crevices(narrow openings), faults or joints.
b) smaller occurrences are called veins and the larger-lodes.
c) formed from the solidification of lava.
d) Examples —tin, zinc, lead, copper.
2.In Sedimentary rocks:
a) in beds or layers.
b) formed as result of deposition, accumulation and concentration in horizontal strata.
c) Examples--Coal and some forms of iron ore and gypsum, potash salt and sodium salt. (these are formed as a result of evaporation especially in arid regions)
3. a)This formation involves decomposition of surface rocks and removal of soluble constituents, leaving a residual mass of weathered material containing ores.
b) Bauxite is one such example.
4 .a) some occur in alluvial deposits in sand and valley floors and base of hills—Placer deposits.
b) contains minerals which are not eroded by water.
c) Gold, silver, platinum.
5.In the ocean waters and in its beds.
a) Examples-- Common salt, magnesium and bromine in ocean water, Manganese nodules in the bed.

Minerals in daily life

We use different things in our daily life made from minerals. Some of regular items are.

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Minerals in food items-Nutritional facts.