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hydrologic cycle click to hear : hydrologic cycle

Continuous circulation of water in its different states (liquid, solid and gaseous) between the oceans, the atmosphere and the Earth’s surface.
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See hydrologic cycle in : french | spanish
solar radiation condensation action of wind ice underground flow ocean precipitation evaporation transpiration infiltration surface runoff evaporation precipitation

solar radiation click to hear : solar radiation

It provides the heat necessary for water to evaporate.

condensation click to hear : condensation

The process by which water vapor is converted, by means of cooling, into liquid or solid water in the form of clouds.

action of wind click to hear : action of wind

Driven by winds, clouds fly over the land.

ice click to hear : ice

Water that accumulates high in the mountains in solid form.

underground flow click to hear : underground flow

Movement of infiltrated water that joins a watercourse on the surface or flows directly into lakes or the ocean.

ocean click to hear : ocean

Vast body of saltwater covering a large part of the Earth’s surface and separating the continents.

precipitation click to hear : precipitation

Various forms of water that fall from the atmosphere.

evaporation click to hear : evaporation

Conversion, without boiling, of liquid water into water vapor when exposed to heat.

transpiration click to hear : transpiration

Phenomenon by which plants discharge water vapor into the atmosphere.

infiltration click to hear : infiltration

Water penetrating into the soil through permeable rock.

surface runoff click to hear : surface runoff

Flow of rainwater or melting snow on the surface of the ground; it produces watercourses.

evaporation click to hear : evaporation

Conversion, without boiling, of liquid water into water vapor when exposed to heat.

precipitation click to hear : precipitation

Various forms of water that fall from the atmosphere.