Soils Practice Questions

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above

Tags

NGSS.MS-ESS2-1

What do we call the different layers of soil?

• Deposits

• Horizons

• Minerals

• Rocks

Which soil horizon is on the bottom?

• topsoil

• subsoil

• bedrock

• bottomsoil

What horizon is just below the topsoil?

• soil

• subsoil

• topsoil

• terrace farming

Which horizon is made up of partially weathered rocks?

• Horizon O

• Horizon B

• Horizon C

• Horizon R

Which of the following is the largest particle in soil?

• sand
• silt
• humus
• clay

Which horizon contains a solid layer of rock?

• Humus

• Topsoil

• Subsoil

• Bedrock

Tags

NGSS.MS-ESS1-4

Place the following horizons in order from top to bottom: bedrock, topsoil, subsoil, organic/humus, parent material/weathered bedrock

• Organic, Topsoil, Subsoil, Parent Material/weathered bedrock, Bedrock

• Organic, Topsoil, Parent Material/weathered bedrock, Subsoil, Bedrock

• Topsoil, Organic, Subsoil, Parent Material/weathered bedrock, Bedrock

• Topsoil, Organic, Parent Material/weathered bedrock, Subsoil, Bedrock

If soil particles are large, then 

• more water is retained
• less water is retained

Tags

NGSS.MS-ESS2-4

How do you determine the texture of soil?

• use a spring scale
• observe color of particles
• rub particles between fingers
• taste particles