the chemical and physical processes that break down rock at the earths surface
What is weathering
100
The process that breaks down rock through chemical changes
What is chemical weathering
100
The region in the S central U.S. that suffered from dust storms in the 1930s.
What is The Dust Bowl
100
It helps from washing the soil away and helps return soil nutrients, retain moisture, and hold soil in place.
What is conservation plowing
100
objects strewn or scattered about; scattered rubbish.
What is litter
200
The process by which water ice wind or gravity moves weathered rock or soil
What is erosion
200
A chemical change in which a substance combines with oxygen as when iron oxides, forming rust.
What is oxidation
200
A section cut or torn from the surface of grassland, containing the matted roots of grass.
What is sod
200
the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth.
What is humus
200
the introduction of harmful substances or products into the environment:
What is pollution
300
This includes freezing and thawing, release of pressure, plant growth, actions of animals, and abrasion
What is mechanical weathering
300
characteristic of a material that is full of tiny, connected air spaces that water can seep through
What is permeable
300
air, wind, atmosphere, animals, fossil fuels, rock, minerals, forestry, soil, water, oceans, lakes, groundwater, and the sun.
What is natural resource
300
plowing in certain lines and shapes. An example would be a man made crop circle. They are made by contour plowing.
What is contour plowing
300
a layer in a soil profile
What is soil horizon
400
Process that splits rock when water seeps into cracks than freezes and expands
What is ice wedging
400
the geologic principle that the same geologic process that operate today opperated in the past to change Earth's surface.
What is uniformitarianism
400
Unbroken solid rock, overlaid in most places by soil or rock fragments.
What is bedrock
400
the ability to produce offspring; power of reproduction
What is fertility
400
the fertile, upper part of the soil.
What is topsoil
500
the grinding of rock by other rock particles carried in water,ice, and wind.
What is abrasion
500
this is what most people use to plant crops
What is soil
500
The system of varying successive crops in a definite order on the same ground, especially to avoid depleting the soil and to control weeds, diseases, and pests.
What is crop rotation
500
a rich, friable soil containing a relatively equal mixture of sand and silt and a somewhat smaller proportion of clay.
What is loam
500
the bed or stratum of earth or earthy material immediately under the surface soil.