Soil

Soil is made of:

• pieces of rock

• air and water

• matter that was once alive

• all of the above

Tags

NGSS.MS-LS2-3

Which layer of soil has low organic material and has clay in the form of aluminum and iron compounds?

• Topsoil

• Bedrock

• Subsoil

Which layer of soil contains lots of roots and minerals for growing plants?

• Topsoil

• Subsoil

• Bedrock

What is HUMUS made from?

• The remains of decayed plants.

• Both

• The remains of decayed animals.

The light colored, leached horizon.

• A Horizon

• O Horizon

• Bedrock

• E Horizon

Layers of soil are also known as:

• Soil Profiles
• Soil Horizons
• Soil sheets
• Soil cores

Soil formation begins with the weathering of 

• litter.
• bedrock.
• the A horizon.
• humus.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which of the horizons in the soil profile shown represent the organic material?

• Horizon O (Humus)
• Horizon A
• Horizon B
• Horizon C

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

In which horizon do most animals such as bugs live?

• Humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

Which layer is the parent material?

• Horizon O

• Horizon A

• Horizon B

• Horizon C

• Horizon R