Soil Basics
Soil Horizons
Weathering & Erosion
Soil Formation Factors
Final Jeopardy
100
What is the mixture of broken rock, organic matter, water, and air?
Soil
100
Which soil horizon contains the most organic material?
O horizon
100
What process breaks down rocks into smaller pieces?
Weathering
100
Which factor affects how fast rocks weather? (temperature and rainfall)?
Climate
200
What is the material in soil that comes from decayed plants and animals?
Humus or organic material
200
Which horizon is called topsoil?
A (Also known as A and O)
200
What process moves sediment from one place to another?
Erosion
200
Which factor refers to the type of rock soil forms from?
Parent material
300
Which soil type has the largest particle size and drains quickly?
Sand
300
Which horizon contains partially weathered parent material?
C horizon
300
Oxidation or hydrolysis are an example of which type of weathering? (Physical or chemical)?
Chemical
300
Which factor refers to how long soil has been forming?
Time
400
Which soil type holds the most water? It has a small particle size.
Clay
400
What is the other name for the R horizon?
Bedrock
400
Ice wedging is an example of this type of weathering?
Physical or mechanical weathering.
400
Which factor includes pants and animals that live in the soil?
Organisms, living things, organic.
500
Which soil type is best for farming due to being balanced?
Loam
500
Place the soil horizons in order from top to bottom.
O A B C R
500
What is it called when wind or water drops sediment in a new location?
Deposition
500
Name two factors that influence soil formation.
Climate, parent material, time, organisms, etc.
500
Using the soil triangle, calculate what the missing percentages would be.
Texture - Clay Loam
Clay - 35%
Sand - ?
Silt - ?
Sand - 25%
Silt - 40%