Study Geography notes on Weathering for O-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the ZIMSEC O-Level Geography notes. It is a free notes for revision.
ZIMSEC O Level Geography Notes: Weathering - Earth movements (plate tectonics) create and lead to the development of the earth's major landforms for example Block Mountains, volcanic cones, lava plateaus and rift valleys. - As soon as they are formed denudation processes attack, expose and gradually wear these landforms away. - Denudation is a term that is used to describe the forces that wear away the land surface it includes the processes of weathering, erosion, transportation and mass wasting. Weathering - Weathering refers to the weakening, breaking up, and disintegration of rocks that form the surface of the ground and lie exposed to the weather elements in situ. - The little phrase in situ is a Latin phrase which simply means "in its original place" /"stationary." Examiners at ZIMSEC, Cambridge and other examining bodies often ask students to distinguish between weathering and erosion. Weathering Breaking down of rocks Happens in situ (is static) Produces inselbergs and karst landscapes Caused mostly by temperature variances and acid rain (i.e there are two types chemical and mechanical) Mass wasting Erosion Washing away of soil by either wind, water or ice. Washing away of top soil Produces gullies and dongas Caused by the movement of water, wind and ice Creep movement on a slope. Image credit Myschoolstuff.co.za 1 MR MANYAWI GEO NOTES O LEVEL 0771076361 Edit with WPS Office