What process which water enters the small pore spaces between particles in soil or rocks?

The process by which water enters the small pore spaces between particles in soil or rocks is called infiltration. During infiltration, water from precipitation or surface sources percolates downward through the soil and rock layers, driven by gravity and capillary action. This process is crucial for recharging groundwater supplies and maintaining soil moisture for plants. The rate of infiltration can be influenced by factors such as soil texture, structure, and moisture content.