rock cycle 0.0 / 5 ? AllFunNone Created by: omaycherCreated on: 19-03-14 17:04 Chemical weathering Happens when rainwater reacts with minerals in a rock.Rain water is slightly acidic because it contains dissolved gasses. 1 of 8 Physical Weathering The minerals in a rock expand if the rock gets hot and contracts if it cools. 2 of 8 Onionskinweathering If the rock is heated and cooled over and over again the forces can make cracks in the rock. 3 of 8 Freeze Thaw Action Water gets into a crack and freezes it, water expands when it turns into ice and makes crack wider. 4 of 8 Biological Weathering When rocks are broken up or worn away by plants and animals. 5 of 8 Erosion Weathered pieces of rock fall to the bottom of cliff. The bits of rock can be transported away by flowing water,wind and ice(glacier) 6 of 8 Abrasion Pieces of rock bump into each other while they are being transported and bits get knocked of them. 7 of 8 Sediment The bits of rock carried by a river are called sediment 8 of 8
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