No student devices needed. Know more
14 questions
topmost layer of soil. It contains living material, plants, and decaying leaves. This layer is thin and very dark in color.
Humus
Topsoil
Subsoil
Parent Material
Made mostly of minerals, and plant roots. This layer is dark in color due to the amount of decaying plant and animal matter.
Humus
Topsoil
Subsoil
Parent Material
Made of sand, silt, and clay. May contain longer roots. It is lighter in color (reddish brown).
Humus
Topsoil
Subsoil
Parent Material
Rock that has been slightly weathered. Not many living things. (yellowish brown).
Humus
Topsoil
Subsoil
Parent Material
The lowest layer of soil. It is a solid layer of rock beneath the soil.
Subsoil
Bedrock
Subsoil
Parent Material
The breaking down of rocks
erosion
deposition
weagthering
any substance that is made of living things or the remains of living things
minerals
organic matter
The largest particle of soil, rough and gritty. It is good for drainage because it dries quickly.
sand
silt
loam
clay
Medium soil particle, smooth and powdery, making water and air difficult to pass through when packed down.
sand
silt
loam
clay
the smallest particles that make up soil, holds a lot of nutrients but too much can make soil heavy and not good for plants.
sand
silt
loam
clay
a mixture of sand, silt, and clay. It is the best type of soil for growing plants. Holds moisture and nutrients while allowing water to pass through.
sand
silt
loam
clay
a mixture of four main ingredients: weathered rock, organic matter, air and water
dirt
air
soil
All the vertical layers or horizons that make up a soil in a particular place
soil horizons
soil profile
The layer of soil that differs in color and texture from the layers above or below it.
soil profile
soil horizons
Explore all questions with a free account