Soil and Soil Conservation Quiz

What is soil made up of?

• Air and Water

• Rocks and water

• Minerals, air, water, and organic material

• Plants and animals

What is the source of soil?

• Parent Rock

• Organic material

• Water

• Air

How is soil formed?

• By decaying organic matter and mixing with inorganic material

• By volcanic eruptions

• By mixing water and air

• By erosion

What is soil conservation?

• A method to maintain the fertility of the soil

• A method to destroy the fertility of the soil

• A method to plant more crops

• A method to increase erosion and nutrient loss

What is humus?

• A type of water

• A type of air

• A type of rock

• Rich, dark organic material formed by the decaying of plants and animals

What does topsoil contain more of than other layers?

• Minerals

• Humus

• Air

• Water

What is subsoil?

• The layer above topsoil

• The bottom layer of soil

• The top layer of soil

• The middle layer

What is bedrock?

• The bottom layer of soil

• The solid layer of rock beneath the soil

• The middle layer of soil

• The top layer of soil

What is contour plowing used for?

• To increase soil loss

• To prevent soil loss

• To increase erosion

• To prevent erosion

What is terracing?

• Making a slope steeper

• Changing a steep hill into smaller, flatter hills

• Making a hill taller

• Making a hill wider