Soil

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

True or False: The layers of soil go in this order: Topsoil, bedrock, subsoil.

• True

• False

Which layer of soil is on bottom?

• Topsoil

• Subsoil

• Bedrock

Identify the soil horizon:
Consists of topsoil (mostly sand and some clay) rich in humus (O horizon) and leached soil deficient in humus and minerals.

• O horizon
• A horizon
• B horizon
• C horizon

Soil horizon is horizontal. Soil profile is vertical?

• true

• false

What is HUMUS made from?

• The remains of decayed plants.

• Both

• The remains of decayed animals.

What is soil?

• Weathering forms the rocks and minerals

• A mixture of rock, mineral particles and organic matter.

• The layers in the soil profile used to classify soil types.

• Organic material in soil comes from living things such as plant and animal remains

How is soil formed? Check all that apply!

• Weathering forms the rocks and minerals of soil

• A mixture of rock, mineral particles and organic matter.

• The layers in the soil profile used to classify soil types.

• Organic material in soil comes from living things such as plant and animal remains

Tags

NGSS.MS-LS2-3

What is a soil profile?

• Weathering forms the rocks and minerals

• A mixture of rock, mineral particles and organic matter.

• The layers in the soil profile used to classify soil types.

• Is a vertical cross section of soil.