Soil Science Unit Test - Green Book

The image is called.....

• A soil horizon
• A soil profile
• A soil pit
• A soil sample

Which of these is a correct definition of the A horizon?

• A layer of partially decomposed organic matter
• A layer of unweathered parent rock material
• Mineral matter mixed with some organic matter
• A zone of illuviation

A brown earth soil is typically...

• Litter rich in nutrients
• Poor in nutrient content
• Unfertile
• Highly acidic

What is the layer of soil just below the topsoil?

• soil
• subsoil
• topsoil
• terrace farming

Tags

NGSS.MS-ESS2-1

Which layer of soil are these roots growing in?

• subsoil
• topsoil

Tags

NGSS.MS-LS1-5

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

• sand
• silt
• clay
• humus

Tags

NGSS.MS-LS2-3

What is the layer of soil that contains humus, leaf litter, and other organic matter?

• O - Organic
• A - Topsoil
• B - Subsoil
• R - Bedrock

Tags

NGSS.MS-LS2-3

Which layer is the bottom of the soil profile?

• C - Partially Weathered Parent Material
• D - Separated rock
• R - Bedrock
• A - Topsoil

Layers of soil are also known as:

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

Tags

NGSS.MS-ESS2-1

In which layer of the soil profile contains the MOST humus?

• Layer 1 (A)
• Layer 2 (B)
• Layer 3 (C)
• Layer 4 (R)

Tags

NGSS.MS-LS2-3