Science review final test - Soil

Horizons: A - B - C layers of the soil

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Bedrock

Anything that is living or was once living.

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Bedrock

Where decayed organic matter is found - humus - black or dark brown

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Bedrock

Lies below the horizons A or topsoil

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Bedrock

It contains the largest rocks and contains no organic matter.

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Bedrock

Largest rock directly under horizon C

• Soil profile

• Organic matter

• Top soil

• Subsoil

• Parent rock

Sizes of the three particles of the soil:

Clay

• smallest

• medium

• large

Sizes of the three particles of the soil:

Silt

• smallest

• medium

• large

Sizes of the three particles of the soil:

Sand

• smallest

• medium

• large

Loam is the perfect particle to plant things.

• True

• False