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rocks and weathering

QuestionAnswer
Weathering is the process that breaks down rocks and other substances
Mechanical Weathering a type of weathering where rock is physically broken
Chemical Weathering is the process that breaks down rock through chemicalchanges
Abrasion wearing away rock by rock particles carried by water ice wind or gravity
Uniformitarianism the geological principal that the same processes that operate today operated in the past to change earths surface
Erosion the process of wearing down and carrying rocks
Frost Wedging when wedges of ice in rocks widen and deepen cracks
Oxidation when iron combines with oxygen in the presence of water
Permeable means that a material is full of tiny connected air spaces that allow water to seep through it.
Soil is the loose weathered material on earth's surface in which plants can grow
Bedrock is the solid layer of rock beneath the soil
Humus is a dark colored substance that forms as a plant and remains animal decay
Fertility is a measure of how well the soil supports plant growth
Loam soil that is made up of about equal parts of clay sand and silt
pH scale measures acidity
Soil Horizon is a layer of soil that differs in color texture and composition from the layers above and below it
Topsoil a crumbly dark brown soil that is a mixture of humus clay and other minerals
Subsoil usually consists of clay and other particles of rock but little humus
Decomposers are the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals
Created by: brm200977821
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