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ch fourteen

QuestionAnswer
mechanical weathering breaking down rock into smaller pieces without changing its composition
chemical weathering breaking down rock into smaller pieces by chemical interactions which change the rock's composition
soil a complex mixture of minerals, water, gases, and organic matter
residual soil soil that forms "in place" directly over its parent rock
transported soil soil with different characteristics from the parent rock beneath
parent rock the rock from which the soil was weathered
soil profile a cross section of the soil and its bedrock
horizon a horizontal layer of soil
humus dark, organic material produced from decay of plants and animals
erosion the movement or transport of rock or soil
contour plowing plowing soil in curved bands that follow the shape of the land
strip-cropping planting crops in alternating bands
terracing construction of steplike ridges that follow the slope of the land
crop rotation planting one type of crop one year, and another type the next year
mass movement movement of fragments down a slope as a result of gravity
rockfall sudden fall of rock from a steep cliff
landslide sudden fall of rock and soil down a steep slope
mudflow rapid movement of mud down a slope
slump a block of soil that becomes unstable on a slope and slides down along a curved surface
solifluction water-saturated soil slowly moving over frozen layers
creep extremely slow movemnet of soil down a slope due to freezing and thawing
plain relatively flat land near sea level
plateau flat land at high elevations
mesa smaller table-like areas formed as a plateau is dissected by weathering
buttes narrow-topped formations formed as mesas are weathered
talus piles of rock fragments at the base of a slope
Created by: sisteele
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