Soil Formation and Soil Types Review2

What is the primary layer where plants and organisms live in the soil?

• Humus (O Horizon)

• Topsoil (A Horizon)

• Subsoil (B Horizon)

• Parent Material (C Horizon)

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Which type of soil is smooth to the touch and retains water longer?

• Loam

• Clay

• Silty

• Sandy

Tags

NGSS.MS-LS2-1

What is the layer of soil that consists of clay, iron, and organic matter?

• Parent Material (C Horizon)

• Subsoil (B Horizon)

• Topsoil (A Horizon)

• Humus (O Horizon)

Which type of soil contains a good mix of silt, sand, and clay and is the best for growing plants?

• Loam

• Sandy

• Silty

• Clay

Tags

NGSS.MS-LS1-5

What is the layer of soil made up mostly of large rocks and called parent material?

• Subsoil (B Horizon)

• Topsoil (A Horizon)

• Humus (O Horizon)

• Parent Material (C Horizon)

Which type of soil is the largest particle found in soil and good for providing drainage?

• Loam

• Clay

• Silty

• Sandy

What is the top layer of soil that is made up of living and decomposed materials such as leaves, plants, and bugs?

• Humus (O Horizon)

• Topsoil (A Horizon)

• Parent Material (C Horizon)

• Subsoil (B Horizon)

Which type of soil is sticky when wet, smooth when dry, and rich in plant food for better growth?

• Sandy

• Clay

• Loam

• Silty

Tags

NGSS.MS-LS1-5

What is the layer of soil that consists of a mass of rock such as granite, basalt, quartzite, limestone, or sandstone?

• Humus (O Horizon)

• Bedrock (R Horizon)

• Parent Material (C Horizon)

• Subsoil (B Horizon)

Which type of soil is dark in color, soft, dry, and crumbly, and has a tight hold on water but drains well?

• Silty

• Sandy

• Loam

• Clay