[ENVI 239] - Midterm Exam Guide - Ultimate 47 pages long Study Guide!
7 Feb 2017
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Bulk density- how much weight can be held by the soil. Soil with bigger particles have a higher bulk density. Sand and silt have a lower bulk density. Erosion- when weathered material is transferred to another location by water, wind, or glaciers. Decomposition- decomposition of organic material such as vegetation. Soil properties: soil stability- want to build on stable soil, drainability permeability flowing, erodibility grooves. Rainsplash erosion- when rain drops and dislodges small pieces of soil. Sheet erosion- heavy precipitation and water collects on surface. Rill and gully erosion- rainwater gets trapped in groves and deepen the. Permeability- is determined by the particle size, small particle size, low. Capillary action- water particles cling to the soil particles. Stream and channel erosion- increased runoff, can cause erosion of the stream. Leaching- heavy precipitation can push down organic nutrients to sub soil so top bottom.
