Chemical Weathering
Define chemical weathering
The process of decomposing rocks into new substances.
While weathering breaks down rock, erosion _________ sediment from one place to another.
Moves
Mechanical weathering causes a what type of change in rocks?
Physical change
Soil is deposited in layers called ________.
Horizon
What is weathering?
The breaking down of rock into smaller pieces by mechanical or chemical means.
What do we call Carbon dioxide (CO2) dissolved in water
Carbonic Acid
What are the four agents of erosion?
Gravity, wind, water, and glaciers
Rocks rubbing against each other
Abrasion
The amount of each kind of particle in soil is called
Texture
The two kinds of weathering are...
Mechanical and chemical
Metals rusting
Oxidation
The sediment that a stream carries
Load
Water freezing in a rock during the winter
List the three soil particles from smallest to largest
Clay, silt, sand
Small particles produced by the weathering of rocks
Sediment
Lichen
An area of sediment at the mouth of a river
Delta
Water freezing under a rock and pushing it upwards
Frost heaving
What is decayed organic material that is found in soil
Humus
Wind blowing picks up loose sediment and carries it away
Deflation
What contains sulfuric acid, carbonic acid, and other chemicals?
Acid Rain
When gravity is the primary force that moves rocks and sediment we call that what?
Mass movement
Creates cracks and breaks in rocks which leads to exfoliation
Pressure release
Soil is ____________.
What is a mixture of weathered rock, rock fragments, decayed organic matter, water, and air.
Deposits of rock and soil left over from a melting glacier
Moraine