Weathering
The breaking down of rock into smaller pieces by physical or chemical means.
What is weathering?
While weathering breaks down rock, erosion _________ sediment from one place to another.
What is moves?
Soil is deposited in layers called ________.
What is a horizon?
These help prevent wind erosion of soil by growing their roots deep in the ground.
What are plants?
The two kinds of weathering are...
What is mechanical and chemical?
What are the five agents of erosion?
What is gravity, wind, running water, waves, and glaciers (ice)?
The dark, organic material formed in soil from the decayed remains of plants and animals.
What is humus?
A soil conservation technique that prevents erosion on steep hills by making smaller flatter fields like "steps".
What is terracing?
______ is what happens when wind blows sand and silt against exposed rock and wears it away.
What is abrasion?
A huge sheet of ice that slowly moves over land taking rocks and other sediment with it.
What is a glacier?
The A-horizon is also known as ___________ because it is usually rich in humus and good for growing plants.
What is topsoil?
This conservation technique leaves old dead crop material behind to reduce runoff.
What is no-till farming?
The burning of fossil fuels has added increased amounts of sulfuric acid to the atmosphere which has also increased _______ _______________.
What is acid precipitation?
The sudden rapid movement of a large amount of material downslope.
What is a landslide?
The B-horizon has is composed mostly of these minerals, the smallest grain size as well.
What is clay?
This conservation technique allows farmers to plow with the shape of the land so the rows act as a series of dams instead of rivers.
What is contour plowing?
In the winter, water gets into the cracks of rock and expands, breaking the rock apart. This is called ____ _____.
What is ice wedging?
A result of Chemical weathering that can major negative implications on the ecosystems of an area.
What is ARD?
The bedrock is the bottom layer. It is weathered down to create soil and is also known as the _____________ rock.
What is parent?
This scientist invented the use of crop rotation with peanuts and soy beans to replenish the nutrients in the soil.
Who was George Washington Carver?