Introduction to Soil

Front

What is the lowest layer of soil that is solid rock?

Back

Bedrock

Front

What is the main characteristic of the parent material layer in soil?

Back

It is mostly rock that has been slightly weathered.

Front

What is the top layer of soil that contains the most organic material?

Back

Topsoil

Front

What layer of soil is made of sand, silt, and clay that have not been broken down all the way?

Back

Subsoil layer

Front

What is humus?

Back

Humus is the dark organic material in soil, formed from decayed plant and animal matter.

Front

What is the role of soil in plant growth?

Back

Soil provides nutrients, water, and support for plants.

Front

What is the process of soil formation called?

Back

Soil formation is called pedogenesis.

Front

What are the main components of soil?

Back

The main components of soil are minerals, organic matter, water, and air.

Front

What is the difference between topsoil and subsoil?

Back

Topsoil is rich in organic material and nutrients, while subsoil contains less organic material and is denser.

Front

What is the significance of soil texture?

Back

Soil texture affects water retention, drainage, and nutrient availability.