Show:
Weathering
Soil
Formation
Landforms
Soil Conservation
Definitions
100
When water freezes in a crack in a rock and it expands making the crack bigger
What is ice wedging
100
This layer of earth contains subsoil with little humus
What is the B horizon
100
A landform made up of nearly flat or gently rolling land with low relief
What are plains
100
Anything in the environment that humans use
What is a natural resource
100
the movement of rock particles by wind, water, ice or gravity
What is erosion
200
Sand and other rock particles are carried by wind, water or ice wearing away exposed rock surfaces
What is abrasion
200
Plant leaves and other organic matter found on the ground
What is litter
200
The difference in elevation between the highest and lowest parts of an area
What is relief
200
A thick mass of roots at the surface of soil
What is sod
200
The process that breaks down rock and other substances
What is weathering
300
Iron combines with oxygen to form this product of chemical weathering
What is rust
300
The organisims that break down dead organisms into smaller pieces and digest them with chemicals
What are decomposers
300
The height above sea level of a point on the Earth's surface
What is elevation
300
Farmers plow their fields along the curves of a slope
What is contour plowing
300
The process in which sediment is laid down in new locations
What is deposition
400
A weak acid produced by carbon dioxide disolving in water which easily weathers rock such as limestone and marble
What is carbonic acid
400
Decayed plant and animal remains
What is humus
400
A large area of land where the topography is made up mainly of one type of landform
What is a landform region
400
Farmers plant different crops in a field each year
What is crop rotation
400
A wide valley through which a river flows
What is a flood plain
500
The type of rock and something else determines the rate of weathering
What is climate
500
a layer of soil that differs from the layers above and below it
What is a soil horizon
500
Mountain ranges and mountain systems in a long connected chain
What is a mountain belt
500
Farmers disturb the soil and its plant cover as little as possible
What is conservation plowing
500
a looplike bend in the course of a river
What is a meander