Soil Types
What type of soil can hold the most water and can stay together?
Clay!
What is the O Horizon?
The Organic Layer!
What is one type of dead organic matter?
A rodent!
What causes frost wedging?
Water freezes/expands in cracks!
How does clay compare to silt?
Clay holds water better and is better than silt for farming!
What type of soil is the worst for planting?
Gravel!
What is parent rock?
Slightly weathered rock!
What is one type of mineral found in organic matter?
Nitrogen, phosphorus, sulfur, potassium, or magnesium! (PAny answer counts)
What causes abrasion?
Wind, water, ice grinding!
What is the 1st layer of soil?
The O horizon!
What type of soil is found on beaches and is bad for growing plants?
Sand!
What brown substance is found on top of the organic layer?
Hummus!
What horizons is organic matter found in?
The O and A horizon!
What causes thermal expansion?
Heat-induced cracking!
How do decomposers help soil?
They break apart complex organic materials!
What type of soil is 2nd best at holding water?
Silt!
What is the R horizon made of?
Bedrock!
What is one type of material found in trees and hummus?
Leafs!
What causes salt crystallization?
Salt growth breaking rock!
How many layers are in the soil profile?
Four to five layers!
What type of soil is best for decomposers?
Loam!
What decomposers live in topsoil? (Name 4)
Bacteria, fungi, earthworms, and millipedes!
What is a crucial ingredient found in soil that is also found in organic matter?
Hummus!
What causes oxidation?
Chemical rusting!
What is a soil scientist called?
A pedologist!