Leaching
Definition
Leaching refers to the process in which water-soluble substances, such as minerals or pollutants, are washed away or dissolved and carried downward through soil layers by percolating water.
Analogy
Imagine a rain shower washing over a pile of sugar cubes. As the rainwater seeps through the sugar cubes, it dissolves some of the sugar and carries it down into a container below. Similarly, leaching occurs when water washes through soil, dissolving and carrying away substances with it.
Related terms
Groundwater: Water that is stored beneath the Earth's surface in underground aquifers and can be affected by leaching.
Percolation: The movement of water through soil layers due to gravity.
Soil Erosion: The wearing away or removal of topsoil by natural forces like wind or water, which can contribute to leaching.
"Leaching" appears in:
Study guides (1)
Resources
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.