Soil Science Quiz

What is soil made of?

• A mixture of rock, sand, clay, dead plants, and animal remains

• Only sand and clay

• Just rocks

• Water and air

Which type of soil has the largest particles?

• Sand

• Clay

• Silt

• Loam

What is loam soil a mixture of?

• Sand, silt, and clay

• Only sand and clay

• Rocks and water

• Dead plants and animals

What is the top layer of soil made up of broken down pieces of dead plants and animals called?

• Humus

• Bedrock

• Subsoil

• Topsoil

Which layer of soil provides support and nutrients to plants?

• Topsoil

• Bedrock

• Subsoil

• Sand

What is the layer of large rocks below the soil called?

• Bedrock

• Humus

• Topsoil

• Clay

Which type of soil has the smallest particles?

• Clay

• Sand

• Silt

• Loam

_____________ is soil with the smallest particles.

_________________ is the middle layer of soil which is a combination of soil and rocks

Materials that plants and animals need to grow