Soil Formation Factors and Soil Profile

Draw the Soil Horizons and label them

What living things are in soil?

• Earth worms

• Sand

• Silt

• Loam

The dark top layer of soil is called?

• Bedrock

• Top soil

• Subsoil

• Roots

What does humus contain?

• Sand

• Clay

• Decayed plants and animals

• Glass

The layer of soil just under the topsoil is called _______.

• Subsoil

• Humus

• Clay

• Rock

Which of the following is NOT one of the three types of soil?

• Sand

• Silt

• Clay

• Mud

Are there minerals in soil?

• Yes

• No

The first layer of soil, called the A horizon is also known as?

• Bedrock

• Subsoil

• Topsoil

• Parent Material

Soil is made of

• Weathered rocks and minerals

• Air and water

• Dead plants and animals

• All of the above

Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?

• Erosion

• Weathering