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3Weathering/Erosion

Unit 3 Weathering and Erosion

TermDefinition
Weathering a process that breaks down rock and other substances at Earth’s surface
Erosion the movement of rock particles by water or wind
Deposition the process in which transported sediment is laid down
Chemical Weathering the breakdown of rocks by chemical reactions that change the rock’s make-up or composition.
Physical Weathering the break up of rocks by physical forces such as ice, water, pressure release, root growth, and abrasion.
Nonrenewable resources a resource that exists in a fixed amount or is used up faster than it can be replaced.
Renewable resources A natural resource that can be replaced in nature at about the same rate that it is used up.
Conservation The process of protecting or saving a natural resource.
Organic Matter soil derived from living things
Soil Horizons A soil layer with physical and chemical properties that differ from those of soil layers above and below it.
Soil Profile The soil horizons in a specific location; a cross section of soil layers that displays all soil horizons.
Constructive Forces Forces that build up Earth’s surface such as volcanic eruptions and deposition of sediment
Destructive Forces forces that tear down or wear away Earth’s surface such as erosion
permeability Soil's ability to let water and air pass through it.
delta a land formation created by sediments deposited at the mouth of a river.
Created by: lcrowe