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5 Cards in this Set
- Front
- Back
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Geography |
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Earthquake |
An earthquake in simple words is shaking of the earth. It is a natural event, caused due to release of energy which generates waves that travel in all directions. Body Waves (P Waves = Primary, S Waves = Secondary Waves) & Surface Waves (last to report, but more destructive) |
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Types of Earthquake |
Tectonic Volcanic Collapse (mining) Explosion Reservoir Induced Measured on: Richter Scale (magnitude) = 0 to 10 Mercalli Scale (intensity) = 0 to 12 |
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Effects of Earthquake |
Ground Shaking Differential Ground Settlement Land and Mudslides Soil Liquefaction Ground Lurching Avalanches Ground Displacement Floods from Dams Fires Structural Collapse Falling Objects Tsunami |
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Structure of Earth |
Crust (outermost solid part) Oceanic thickness = 5kms Continental = 30kms Himalayan Region = 70kms Rock Found : Basalt The Mantle Moho's discontinuity to 2900kms Upper portion = Asthenosphere (upto 400kms) The Core Outer Core = Liquid Inner Core = Solid Made of Nickel & Iron (NiFe Layer) |
