Which term describes water entering the soil at the surface?

Which term describes water entering the soil at the surface?

• A. Percolation
• B. Infiltration
• C. Evaporation
• D. Transpiration

Answer: (B)

Infiltration is the process by which water enters the soil at the surface. It happens when rainfall or surface water soak down from the ground into the soil, filling the pore spaces and creating soil moisture. The rate of infiltration depends on factors like soil type (porosity and permeability), how wet the soil already is, vegetation or surface cover, and how intense or long the rainfall is. If the soil is crusted or already saturated, infiltration slows and runoff may occur instead. After water has infiltrated, it can continue to move downward through the soil by percolation, which specifically describes downward movement through soil and rock due to gravity, potentially reaching groundwater. Evaporation and transpiration, on the other hand, remove water from surfaces or plants rather than letting it enter the soil.

Infiltration is the process by which water enters the soil at the surface. It happens when rainfall or surface water soak down from the ground into the soil, filling the pore spaces and creating soil moisture. The rate of infiltration depends on factors like soil type (porosity and permeability), how wet the soil already is, vegetation or surface cover, and how intense or long the rainfall is. If the soil is crusted or already saturated, infiltration slows and runoff may occur instead. After water has infiltrated, it can continue to move downward through the soil by percolation, which specifically describes downward movement through soil and rock due to gravity, potentially reaching groundwater. Evaporation and transpiration, on the other hand, remove water from surfaces or plants rather than letting it enter the soil.