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Earth as a Planet
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Geographic Grid - Latitudes & Longitudes
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Motions of the Earth
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Structure of the Earth
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Landforms of the Earth
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Rocks
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Volcanoes
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Earthquakes
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Weathering and Denudation
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Hydrosphere
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The Atmosphere
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Insolation
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Atmospheric Pressure and Winds
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Humidity and Precipitation
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Types of Pollution
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Sources of Pollution
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Effects of Pollution and Preventive Measures
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Natural Regions of the World
Atmospheric Pressure and Winds
Air Pressure and Pressure Belts
- The force per unit area exerted on the surface of earth by weight of the air above that surface is known as atmospheric pressure. The upper layers of atmosphere exert pressure on the lower layers.
- Atmospheric pressure is measured by an instrument known as barometer. Standard se
Types of Winds and Wind Belts
- Wind is the horizontal movement of air from areas of high pressure to areas of low pressure caused by the uneven heating of earth by the sun. Winds can be characterised on the bases of their direction, deflection and, speed.
- Wind Direction can be measured with the help of wind
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