Soil Formation and Structure

Which layer is the subsoil?

• Horizon O

• Horizon A

• Horizon B

• Horizon C

• Horizon R

Which layer is the topsoil?

• Horizon O

• Horizon A

• Horizon B

• Horizon C

• Horizon R

Soil is made of:

• pieces of rock

• air and water

• matter that was once alive

• all of the above

Tags

NGSS.MS-LS2-3

SOIL LAYERS ARE CALLED.......

• MATERIALS

• ORGANIC

• HUMUS

• HORIZONS

What is the name of Horizon 1?

• Subsoil 

• Topsoil

• Bedrock 

• Parent Rock

What is the name of Horizon 3?

• Subsoil 

• Topsoil

• Bedrock 

• Parent Rock

What is humus?

• soil

• organic matter

• loam

• minerals

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The horizon that contains partially weathered rock.

• C Horizon

• A Horizon

• B Horizon

• Bedrock

What is the name of Horizon 2?

• Subsoil 

• Topsoil

• Bedrock 

• Parent Rock

What happens when sediment eroded by water, ice, and wind slows down or stops moving?

• The sediment is deposited in a new location.

• The sediment continues to erode.

• The sediment instantly turns into soil.

• The sediment mixes with other sediment to become rock.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2