Minerals and Energy Resources Test - 2

Bauxite deposits are formed by the decomposition of a wide variety of rocks which are rich in aluminium silicates, leaving a residual mass of weathered material.

Mica deposits are found in the northern edge of the Chota Nagpur plateau. Koderma Gaya – Hazaribagh belt of Jharkhand is the leading producer.
Mica is a mineral made up of a series of plates or leaves.
It splits easily into thin sheets.

In sedimentary rocks a number of minerals occur in beds or layers.
They have been formed as a result of deposition, accumulation and concentration in horizontal strata.
Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure.
gypsum, potash salt and sodium salt are another group of sedimentary minerals.

The Monazite sands of Kerala is rich in Thorium.
Thorium, is also available in Jharkhand and the Aravalli ranges of Rajasthan.
It is used for generating atomic or nuclear power.
When an alteration is made in the structure of atoms, much energy is released in the form of heat and this is used to generate electric power.

Haban sees people getting into strange house like objects which move along the road. He also sees a “kitchen” dragging a number of house along with it. He is amazed and asked his father “Why don’t our houses move like the one we saw in Guwahati, Ba?” Ba replies, “These are not houses, they are buses and trains.Unlike our houses these are not made of bricks and stones,metal like iron and aluminum are used in making these.

We use different things in our daily life made from metal.These metals are extracted from minerals embedded in the rocks.

The earth’s crust is made up of different minerals embedded in the rocks. Various metals are extracted from these minerals after proper refinement.Even the food that we eat contains minerals.

Minerals are an indispensable part of our lives. Almost everything we use, from a tiny pin to a towering building or a big ship, all are made from minerals.In all the stages of development,human beings have used minerals for their livelihood, decoration,festivities,religious and ceremonial rites.

Cars, buses, trains, aeroplanes are manufactured from minerals and run on power resources derived from the earth. Even the food that we eat contains minerals. In all stages of development, human beings have used minerals for their livelihood, decoration, festivities, religious and ceremonial rites.Life processes cannot occur without minerals.

Life processes cannot occur without minerals. Although our mineral intake represents only about 0.3 per cent of our total intake of nutrients, they are so potent and so important that without them we would not be able to utilise the other 99.7 per cent of foodstuffs.