geologic processes on earth Flashcards
Occurs near or on the surface of the Earth.
Exogenous processes
Influenced or driven by gravity, water, wind, and organisms
Exogenous Processes
Destructive occurrences that leave significant changes on the landscape and even in the ecosystem of an area
Exogenous Processes
4 types of Exogenous Processes
Weathering, Erosion, Mass Wasting, Sedimentation
Disintegration of rocks, soil, and minerals together with other materials through Earth’s subsystems
Weathering
On the spot
In situ
Happens even without movement or transportation
Weathering
2 types of weathering
Physical Weathering, Chemical Weathering
Breakdown of rocks by mechanical forces concentrated along rock fractures. It is due to changes in temperature, pressure, etc.
Physical Weathering
Process by which rocks break down by chemical reactions. New or secondary minerals develop and sometimes replace the original properties of the minerals in the original rock or soil
Chemical Weathering
Processes that contribute to Chemical Weathering
Oxidation, Hydrolysis, Acid Rain
Reaction of a substance with oxygen. Example: Iron oxide
Oxidation
The chemical breakdown of a substance when combined with water
Hydrolysis
Cause metals or stones to corrode or deteriorate and change their properties
Acid Rain
The process by which Earth’s surface is worn away by wind, water, or ice. Moves rock debris or soil from one place to another
Erosion