Rocks and Soil 3rd Grade

Front

What is the layer of soil that contains a little bit of humus, medium-sized rocks, and tree roots?

Back

Subsoil

Front

Which layer of soil has very little humus and consists mostly of big rocks?

Back

Bedrock

Front

What type of soil absorbs a lot of water?

Back

Clay

Front

What is the organic material that is rich in nutrients and beneficial for plant growth?

Back

Humus

Tags

NGSS.MS-LS2-1

Front

Which layer of soil contains the most humus and is best for plant growth?

Back

Topsoil

Tags

NGSS.MS-LS2-1

Front

What is the process called when rocks break down into smaller pieces?

Back

Weathering

Front

What is the term for the top layer of soil that supports plant life?

Back

Topsoil

Front

What is the difference between soil and dirt?

Back

Soil is a living ecosystem that supports plant life, while dirt is simply displaced soil without any living components.

Front

What are the three main components of soil?

Back

Sand, silt, and clay.

Front

What is the role of humus in soil?

Back

Humus improves soil structure, retains moisture, and provides nutrients for plants.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4