Soil Formation

Front

What is the biggest particle you can find in soil?

Back

Sand

Front

Which of the following is the smallest particle you can find in soil?

Back

Clay

Front

Which soil horizon is usually called 'topsoil' and contains primarily humus?

Back

Horizon A

Front

What are the three different particles found in soil?

Back

Clay, sand, silt

Front

Scientists classify soil into types based on characteristics like what?

Back

Climate, plants, soil composition

Front

What is soil made of?

Back

Soil is made of minerals, organic matter, water, and air.

Front

What is humus?

Back

Humus is decomposed organic material in soil that enriches it.

Front

What role do earthworms play in soil formation?

Back

Earthworms aerate the soil and help decompose organic matter.

Front

What is the process of weathering?

Back

Weathering is the breaking down of rocks into smaller particles.

Front

What is the difference between soil and dirt?

Back

Soil is a natural resource that supports plant life, while dirt is displaced soil.