Exam- Weathering, Mass Movement, and Soil Formation Flashcards
(24 cards)
Rain is a weak acid causing this process
Carbonic acid
When rocks are broken but unchanged
Mechanical
Topsoil is also called
A Horizan
What are freezing causes this process
Ice wedging
The entire arrangement of soil layers
Soil profile
When rocks peel off in horizontal layers
Exfoliation
Organic material found in topsoil
Humus
Very slow mass movement
CREEP
Process which causes minerals in organics to move from A horizon to the B horizon
Leaching
Four factors that determine the rate of weathering
Climate, rock type, surface area exposed, and topography
List the ingredients in their average percentage is found in soil
Organic matter ___%
Mineral matter ____%
Water____%
Air___%
5
45
25
25
Horizontal slats of rocks are peeling Off a mountaintop mechanical or chemical
Mechanical
My car is very rusty
Chemical
Granite is broken into a pile of Quartz Sand
Chemical
Frost heaves
Mechanical
Limestone caves form underground
Chemical
Rapid mass movement includes
Landslides, mudslides, and Avalanche
The rate at which water flows through soil
Permeability
The ability of soil to restrict water flow
Porosity
Living things can break rock apart like root wedging or Burrowing animas
Biological activity
When rocks chemically changed into new material due to exposure to the atmosphere
Chemical weathering
When oxygen combines with a material in changes it
Oxidation
When water bond with material and changes it
Hydrolysis
When carbon dioxide combines with water informs carbonic acid which eats away at rock
Carbonation
