PLS 2- Day #10 Soil Water Quiz

Why is soil water important in nutrient management?

• It prevents soil erosion.

• It reduces soil compaction.

• It provides a pool of dissolved nutrients for plant uptake.

• It increases soil temperature.

What is the primary force that enables soil to retain water?

• Photosynthesis

• Capillarity

• Gravity

• Evaporation

What is the effect of capillary action in soil?

• It prevents water from moving.

• It causes water to move upward and horizontally.

• It causes water to move downward.

• It increases soil temperature.

Which type of soil has the greatest water holding capacity?

• Sandy soil

• Clayey soil

• Loamy soil

• Gravelly soil

What is the relationship between soil pore size and capillary rise?

• Capillary rise is the same for all pore sizes.

• Pore size does not affect capillary rise.

• Smaller pores result in higher capillary rise.

• Larger pores result in higher capillary rise.

What is the term used to describe the attraction between water molecules?

• Adhesion

• Cohesion

• Surface tension

• Capillarity

What is the term used to describe the attraction between water and solid surfaces?

• Capillarity

• Surface tension

• Adhesion

• Cohesion

What is the effect of surface tension on water surfaces?

• Water surfaces behave like expandable films.

• Water surfaces become solid.

• Water surfaces evaporate quickly.

• Water surfaces repel each other.

What is the term for the height to which water rises within a narrow tube?

• Adhesion

• Capillary rise

• Surface tension

• Cohesion

What type of soil typically has smaller pores and greater water retention?

• Sandy soil

• Clayey soil

• Loamy soil

• Gravelly soil