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Weathering
Soil & Mass Movement Test Review
31
Science
12th Grade
09/30/2013

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Cards

Term
Mechanical Weathering
Definition
Physical forces break down drocks without exfoliation, biological activity, frost wedgingm changing their composition
Term
Creep
Definition
Slow, downhill movement of regolith and soil
Term
Chemical Weathering
Definition
Occurs most rapidly in hot, wet climate
Term
Regolith
Definition
Layer of rock and mineral fragments that cover most of Earth's land surface
Term
Flow
Definition
Mass movements of materials containing large amounts of H20
Term
Mudflow
Definition
Water & Dirt
Term
Earthflow
Definition
Movement of land due to water, moves slowly & carries clay
Term
Slump (Rockslide & Rockfall)
Definition
Downward movement of a block of material on a curved surface
Term
Mass Movement
Definition
Transfer of rock & soil downslope due to Gravity, form of erosion
Term
Loam
Definition
Soil texture best for plant life
Term
Soil Layer
Definition
Also called A Horizon
Term
Residual Soil
Definition
Soil where parent material is the bedrock
Term
Differential Weathering
Definition
Cause of unusual and spectacular rock formations. Minerals in rock weather at different rates
Term
Exfoliation
Definition

Granite domes

Ex: Enchanted Rock

Term
Frost Wedging
Definition
Weathering due to repeated freezing of water
Term
Humus
Definition
Decaued remains of organisms found in soil
Term
Talus
Definition
Piles of rock at the bottom of a mountain
Term
What type of climate is best for chemical weathering?
Definition
Hot & Humid
Term
What causes the rock formations you have been researching?
Definition
Differential weathering, sand, water, erosion
Term
Name the types of chemical weathering:
Definition
Acid rain, water
Term
What factors effect mass movement
Definition
Removal of vegitation, saturation, by water, earthquakes, road building
Term
Name ways to control erosion
Definition
Terracing milsides, planting windbreaks, rotating crops
Term
Name factors that accelerate erosion. Which factor is the accelerates erosion the fastest?
Definition
Construction
Term
Name the soil horizons and describe each
Definition

Pedocal: Grassland

Pedalfer: Forest

Laterite: Tropical

Term

Name the three types of soil and describe each

 

Definition
Topsoil, subsoil, weathered parent material, parent material
Term
What is the greatest factor affecting in soil erosion?
Definition
Climate
Term
Name the soil texture sizes from smallest to largest
Definition
Clay, Slit, Sand
Term
Describe the components of good quality soil
Definition
Humus, topsoil, subsoil, air minerals
Term
Describe the types of soil steep slopes would have
Definition
Poor Soil
Term
Soil Profile:
Definition
A verticle section through soil showing the soil horizons (layers)
Term
Factors that effect soil formation:
Definition
Slope, parent soil, time, CLIMATE (greatest)
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