Weathering, Erosion, and Soil

1
Chapter 7

• Weathering, Erosion, and Soil

2
Weathering (two types)

• ________ breaking rocks and minerals down into
  smaller pieces

• ________ rocks and minerals undergo changes in
  composition resulting from chemical reactions

Mechanical
Chemical
3
Example of ___________ Weathering
Mechanical
4
__________ Weathering examples including cavern
formation and acid rain.
Chemical
5
Coastal Erosion and Deposition
6
Soil samples can be plotted on a triangular grid
to show texture combinations.
7
Soil Textures

• ____ largest drains well
• ____ intermediate in size
• ____ smallest drains poorly
• ____ combination of the other three

Sand
Silt
Clay
Loam
8
A soil _______ shows the different horizons,
layers or zones present and their relative
thicknesses. This is dependent on climate and
topography.
profile
9
true
true
true
below
true
chemical
silicates
oxygen