Soil Quiz

What is soil?

• The upper layer of earth where plants grow

• A type of rock

• A liquid found underground

• A type of plant

What color is soil typically described as?

• Red or yellow

• Black or dark brown

• Blue or green

• White or gray

Why is soil important?

• To nourish our bodies with food

• To have healthy ecosystems

• To need fuel and fiber

• All of the above

What is the main component of Horizon A?

• Minerals and organic material

• Bedrock

• Clay

• Sand

What is the A Horizon commonly known as?

• Subsoil

• Bedrock

• Topsoil

• Parent material

Which layer is less affected by microbial activity?

• A Horizon

• B Horizon

• C Horizon

• O Horizon

What is the process called when materials move through soil layers?

• Erosion

• Sedimentation

• Weathering

• Compaction

Which of the following is a characteristic of the C Horizon?

• Rich in organic material

• Mineral layer

• High in clay content

• Contains humus

Which property is NOT used to classify soil orders?

• Structure

• Density

• Humidity

• Porosity

What type of soil is less developed than other soil orders?

• Inceptisols

• Aridisols

• Histosols

• Gelisols