Soil & Weathering

Front

What is the arrangement of soil layers called?

Back

Soil profile.

Front

Which horizon is known as topsoil and has the most humus?

Back

Horizon A.

Front

What type of climate supports mostly chemical weathering?

Back

Tropical.

Front

What is the 'eluviated' layer that contains sand and silt?

Back

E horizon.

Front

What is organic matter in soil called?

Back

Humus.

Front

What are the three main components of soil?

Back

Minerals, organic matter, and pore spaces.

Front

What is the process of breaking down rocks into smaller pieces called?

Back

Weathering.

Front

What is the difference between mechanical and chemical weathering?

Back

Mechanical weathering physically breaks rocks apart, while chemical weathering changes the chemical composition of rocks.

Front

What is the role of earthworms in soil?

Back

Earthworms help aerate the soil and break down organic matter.

Front

What is leaching in the context of soil?

Back

Leaching is the process by which water-soluble substances are washed out from the soil.