Soil, Weathering, Erosion Test Review

Soil formation begins with the weathering of_______.

• Humus
• Subsoil
• Litter
• Rock

The layer of soil which the topsoil is found.

• Horizon A
• Horizon B
• Horizon C
• Horizon O

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

In which answer choice are the soil particles arranged in order from LARGEST to SMALLEST?

• Silt, sand, clay
• Silt, clay, sand
• Clay, silt, sand
• Sand, silt, clay

What phrase is another name for the B Horizon soil?

• parent material
• topsoil
• subsoil
• bedrock

Layers of soil are also known as:

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

Which layer in a soil profile would be most affected by weathering & erosion

• C horizon

• B horizon

• R horizon

• A horizon

Tags

NGSS.MS-ESS2-2

Match the following

• Plant Litter turning into Humus

• C Horizon

• Some organic matter, plant roots

• B Horizon

• Light in Color, scattered parent rock

• A Horizon

• Very fertile, dark color, lots of humus

• O Horizon

Tags

NGSS.MS-LS2-3

Which of the following is NOT a factor that affects soil formation?

• Climate

• Parent Material

• Topography

• Pollution

• Vegetation

Soil is composed of 4 parts, which is NOT a part of soil?

• weathered rock

• decayed organic material

• water

• worms