General Knowledge for Competitive Exams

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Minerals: Definition, Property and Uses

A mineral is mostly a compound that is usually crystalline in nature and is a result of geological progressions.

Major Biomes of the World

Mar 28, 2011
Vegetation comprises of plants growing over the surface of the earth. The plant geographers have divided the vegetation of the world into four great biochores : The Forest Biochore : Defined as plant formation consisting of trees growing close together  nd forming a layer of foliage that shades the ground.

Earth’s Interior (Structure of the Earth)

Dec 15, 2014
The structure of earth is in spherical form and is composed of four layers, three solid and one liquid.

Major Oceans of the World

Sep 8, 2015
Major Oceans of the World

Rocks

Mar 29, 2011
Down to a depth of 16 km from the surface of land, 95 per cent of the earth materials found in the earth’s crust consist of rocks.  Rocks are made up of individual substances, called minerals, found mostly in solid state.

Structure Of The Earth

Mar 28, 2011
The earth is an oblate spheroid. It is almost spherical, flattened a little at the poles with a slight bulge at the centre (equator). The structure of earth’s interior is layered.

Landform

Mar 28, 2011
There are three major Landforms : mountains, plateaus and plains. Mountains An uplifted portion of the earth’s surface is called a hill or a mountain. Mountains are classified into the following four types.

Food Chain

Mar 29, 2011
The sequence of eating and being eaten and the resultant transfer of energy from one level to another is known as the food chain. The plants and algae are the first level in food chain and are known as primary producers.

Continents: Lowest Points

Feb 7, 2014
A continent is one of several very large landmasses on Earth.

Continents: Highest Points

Feb 6, 2014
Continents are understood to be large, continuous, discrete masses of land, ideally separated by expanses of water.

Earthquakes

Mar 29, 2011
Any sudden disturbance below the earth’s surface may produce vibration or shaking in earth’s crust and some of these vibrations when reaches the surface, are known as earthquakes.

Lithosphere

Sep 15, 2012
The lithosphere is the outer solid part of the earth, including the crust and uppermost mantle.

Soil

Mar 28, 2011
Soil is the uppermost layer of the earth’s crust. It contains a mixture of fine powdered rock material and humus. Humus is the organic matter which is added to the soil by the decayed and decomposed remains of plants and animals.

Continental Drift

Mar 28, 2011
Alfred Wegener was the geologist who in 1924 propagated the theory of continental drift which is very much in vogue now. According to this theory, nearly 150 million years ago,there was a single continent on earth known as ‘pangaea’ which broke into several pieces and began to drift apart.

Latitude and Longitude

Mar 28, 2011
A globe has two fixed points—the North Pole and the South Pole. An imaginary line equator is drawn in such a way that at all points it lies exactly halfway between the two poles. It divides the earth into two equal parts i.e., the Northern Hemisphere and the Southern Hemisphere.

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