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Movement and filtering of fluid from porous material is called as __________
Percolation
Infiltration
Transpiration
Precipitation
Percolation
Percolation is the downward movement of water through the unsaturated zone of the soil profile, often involving the filtering of impurities as water moves through porous material. It is a fundamental process in the hydrological cycle, facilitating groundwater recharge.
Percolation is the downward movement of water through the unsaturated zone of the soil profile, often involving the filtering of impurities as water moves through porous material. It is a fundamental process in the hydrological cycle, facilitating groundwater recharge.
v=тИТKdldhтАЛ тАФ Darcy's Law, where v is discharge velocity, K is hydraulic conductivity, and dldhтАЛ is the hydraulic gradient.
The process is driven primarily by gravity and the hydraulic gradient within the soil medium. As water moves through interconnected soil pores, mechanical straining, adsorption, and biological activity act to filter suspended solids and contaminants from the fluid. The rate of flow is governed by Darcy's Law, which relates the flow velocity to the hydraulic conductivity and the hydraulic gradient.
Percolation occurs primarily in the unsaturated zone, also known as the vadose zone.
It differs from infiltration, which is the entry of water into the soil surface.
The filtering action of soil makes percolation a natural water treatment process.
The rate of percolation is highly dependent on soil porosity, permeability, and moisture content.
Natural purification of water as it travels through soil layers.
Essential for replenishment of aquifers.
Can transport surface pollutants into groundwater if soil is contaminated.
Slow process depending on soil texture.
Groundwater recharge estimation
Design of septic tank leach fields
Agricultural irrigation management
| Feature | Percolation | Infiltration |
|---|---|---|
Definition | Movement through porous media | Entry through soil surface |
Infiltration represents the initial transition of water from the surface into the soil, while percolation is the subsequent movement within the soil mass.
Transpiration relates to water vapor loss from plants.
Precipitation refers to the falling of condensed water vapor as rain, snow, or hail.
A is correct тАФ Percolation is the process of fluid moving through and being filtered by a porous medium.
Always distinguish between infiltration (surface boundary) and percolation (subsurface movement) to avoid common mistakes in hydrology questions.
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