Soil science basics

Which soil particle is the loargest?

• Sand

• Silt

• Clay

• Rock

The spaces between soil paticles are called _______________.

• Soil spaces

• Pore spaces

• Air spaces

• Hydrolytic spaces

which soil particle is the smallest?

• Sand

• Silt

• Clay

• Rock

What are the different layers of soil in the earth called?

• Soil horizons

• Soil layers

• Soil strata

• Soil changes

The soil horizons together make up the soil _____________.

• Strata

• Pedigree

• Parallel

• Profile

What is the process by which rock is broken down into smaller particles by exposure to the elements?

• Weathering

• Erosion

• Profiling

• Deconstructtion

What material makes up 5% of an Ideal soil?

• Air

• Water

• Minerals

• Organic matter

What material makes up 45% of an Ideal soil?

• Air

• Water

• Minerals

• Organic matter

What Layer of the soil profile supports most of the plant and animal life on earth?

• O horizon

• A horizon

• B horizon

• C horizon

Which soil horizon is most likely to erode first?

• O horizon

• A horizon

• B horizon

• C horizon