What is the water cycle?
The water cycle, also known as the hydrological cycle, is a continuous process through which water
circulates between the Earth's oceans, atmosphere, and land. It involves several key stages:
Evaporation: Water from oceans, rivers, and lakes transforms into water vapor due to heat from the
sun.
Condensation: As water vapor rises and cools, it forms clouds. This process is the collection of
vapor molecules into liquid droplets.
Precipitation: Clouds gather more water droplets until they become heavy enough to fall as rain,
snow, sleet, or hail.
Collection: Precipitated water collects in bodies of water, such as rivers, lakes, and oceans, and can
also infiltrate the soil, replenishing groundwater.
Runoff: Water from precipitation and melting ice flows over the land and returns to the oceans,
ready to start the cycle anew.
Each of these stages plays a significant role in sustaining life on Earth and regulating climate. The water
cycle is crucial for maintaining ecosystems, drinking water supplies, and agricultural practices.
Useful Sources:
National Geographic
U.S. Geological Survey (USGS)
Environmental Protection Agency (EPA)