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Weathering and Erosion

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by

Natasha Vykhovanets

on 31 October 2013

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Transcript of Weathering and Erosion

Weathering
The breaking down or wearing away of the earths surface.
Erosion
Weathering and Erosion
what is weathering and erosion
the process of eroding or being eroded by wind, water, or other natural agents

Earthquakes
Earthquakes are vibrations on earths surface caused by sudden movement in earth.
Effects of Earthquakes
Sometimes little damage is done
landslides
tsunamis
Floods
Causes of Earthquakes
sudden movement in earth
faults
Floods occur when a large amount of water covers land that is usually dry.
Cause of flooding
heavy rainfalls
thunderstorms
Volcanoes
Volcanoes are mountains with openings in earths crust.
Effects of volcanic eruptions
changes in Earth's surface
changes in the top of the mountain
lava and ash can destroy forests and bury fields
can cause changes in weather patterns
Deposition
Deposition is the dropping, or depositing of sediments
Causes of deposition
water;ex: shells on the beach are deposition by ocean waves or delta at the end of a river
wind;ex: sand dunes on the desert and beach are deposition by wind
Ice;ex: glaciers push debris as they slide causing it to build up
Landslides
Landslides are mass movement of land due to gravity.
Effects of landslides
buildings fall
power lines break
gas lines break
Cause of landslides
gravity
even occur on the continental slope in the ocean
Chemical and Physical Weathering
Chemical
weathering
The erosion of rocks, building materials, etc., caused by chemical reactions.
Physical
weathering
Weathering is the breaking down of rocks, soils and minerals
Full transcript