Quiz on Section 2

What is erosion?

• The process by which soil nutrients are replenished

• The process by which material, such as topsoil, is moved from one place to another

• The process by which soil is artificially created

• The process by which rocks are broken down into smaller pieces

What causes erosion?

• Only human activities

• Only natural processes

• Both natural processes and human activities

• Neither natural processes nor human activities

What happens more quickly, soil formation or erosion?

• Soil formation occurs more quickly than erosion

• Erosion occurs more quickly than soil formation

• Soil formation and erosion occur at the same rate

• The rate of soil formation and erosion cannot be compared

Which of the following help protect soil from erosion?

• Crops, trees, and other plant communities

• Animals and insects

• Buildings and urban structures

• Rocks and boulders

What is the purpose of intercropping in farming practices that reduce erosion?

• To use less water for irrigation

• To mix different crops together

• To increase the use of fertilizers

• To plant crops in a greenhouse

What is the role of shelterbelts in farming practices that reduce erosion?

• They reduce soil turnover

• They mix different crops together

• They are tall plants that block wind

• They involve planting crops in a greenhouse

What is conservation tillage?

• A method where soil turnover is increased

• A method where soil turnover is reduced

• A method where crops are planted in a greenhouse

• A method where crops are mixed together

What is terracing in farming practices that reduce erosion?

• Planting crops in a greenhouse

• Mixing different crops together

• Turning steep slopes into "steps"

• Blocking wind with tall plants

How is contour farming performed to reduce soil erosion?

• By planting crops in a greenhouse

• By planting crops perpendicular to hill's slope

• By increasing soil turnover

• By alternating crops

What is ranching?

• The process of planting and harvesting crops

• The raising and grazing of livestock

• The conservation of soil and water

• The study of soil degradation