Types of Weathering
Soil Layers
Vocabulary
Soil Formation
Chemical or Physical Weathering
100
This type of chemical weathering caused the effect seen in the picture.
What is acid rain?
100
This layer of the soil contains dead leaves, animal remains and humus.
What is Horizon O or Organic Layer?
100
This word means that a material has holes that allow water to easily pass through it.
What is permeable?
100
The composition of soil depends on this.
What are the sediments that are weathered to form it?
100
Acid rain eats away at the features on a statue.
What is chemical weathering?
200
This type of physical weathering caused the effect seen in the picture below:
What is wind abrasion?
200
This layer of soil contains roots of plants and decomposers.
What is the topsoil or horizon A?
200
This word means that sediments have been broken down by wind, water, glaciers, animals, chemical processes, etc.
What is weathering?
200
This is what keeps soil in place and prevents erosion from happening.
What is plant coverage or plants?
200
Wind in the desert blows sand particles against a large rock.
What is physical weathering?
300
This caused the chemical weathering seen in the picture below:
What is oxidation?
300
This layer of soil contains solid rock. It starts about 40 inches below the surface layer.
What is bedrock or Horizon R?
300
This word means that sediments have been moved or transported from one place to another.
What is erosion?
300
These are the 4 ingredients of soil.
What are air, water, minerals, and humus?
300
A bicycle is left out in the rain over several weeks forming rust.
What is chemical weathering?
400
This type of physical weathering caused the effect in the picture below:
What is ice wedging?
400
This layer of soil is located below the topsoil. It has less nutrients and organic material that the topsoil.
What is the subsoil or Horizon B?
400
This word means a type of soil that contains silt, sand and clay.
What is loam?
400
Name the soil horizons in order by using their letters.
What is O, A, B, C, R?
400
A tree's root release chemicals into the surrounding rock causing the rock to change color.
What is chemical weathering?
500
This type of physical weathering caused the effect in the picture below:
What is root or plant wedging?
500
This layer of soil contains partially weathered rocks.
What is parent material or Horizon C?
500
This phrase means the layers of soil that form through weathering and erosion.
What are soil horizons?
500
This letter in the diagram below is where the most humus would be found.
What is letter O?
500
A rock in the bottom of a river bed is smoothed after water repeatedly rushes over it.
What is physical weathering?