what is capillarity and runoff ?
http://dictionary.reference.com/browse/capillarity
http://dictionary.reference.com/browse/runoff
Capillarity refers to the ability of a liquid to flow into narrow spaces or gaps, against the force of gravity. It occurs due to the attractive forces between the liquid molecules and the surface of the solid material in contact with the liquid. The liquid is drawn upward or sideways through narrow openings, such as thin tubes or tiny cracks, by the capillary action.
To understand capillarity, you can refer to reputable sources such as dictionaries or scientific websites. Dictionary.com is a reliable online platform that provides definitions of various terms, including capillarity. By searching for "capillarity" on Dictionary.com (http://dictionary.reference.com/browse/capillarity), you will find a concise definition along with any other relevant information or examples related to the topic.
Runoff, on the other hand, refers to the movement of water over the Earth's surface. It occurs when the amount of precipitation exceeds the capacity of the ground to absorb it. The excess water flows over the surface, either overland or through channels, and eventually reaches bodies of water such as rivers, streams, or lakes.
To explore the meaning of runoff, you can again refer to reputable sources like dictionaries or scientific websites. Dictionary.com provides a definition of "runoff" (http://dictionary.reference.com/browse/runoff), as well as additional information or examples that can help you understand the concept better.