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Natural hazards (Earth's composition (Mantle (Lithosphere is the rigid…
Natural hazards
Earth's composition
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Mantle
Lithosphere is the rigid, upper part. Inc. crust
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Volcanoes
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Destructive
Oceanic plate melts, forming a pool of magma
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Eruption
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Pyroclastic flows
High density mix of lava, rocks, pumice, ash and gas
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Terminology
Natural hazard: Due to a dynamic planet, changes in the environment can pose risk to human life or infrastructure.
Three hazards: tectonic hazards, atmospheric and gemophlological
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Plate boundaries
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Destructive
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Oceanic sinks, it is less dense
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Collision
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Land forced upward, creates mountains
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Effects and responses
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Secondary
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Leaking gas could be ignited, starting fires
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Long-Term responses
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Reconnect supplies, water and gas
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