Study Guide: The Water Cycle
The water cycle, also known as the hydrological cycle, is the continuous movement of water on,
above, and below the surface of the Earth. It is powered by solar energy and is essential for
sustaining life on our planet.
Key Stages of the Water Cycle:
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Evaporation: Water changes from liquid to vapor due to heat from the sun.
Condensation: Water vapor cools and forms clouds in the atmosphere.
Precipitation: Water falls back to Earth as rain, snow, sleet, or hail.
Collection: Water gathers in rivers, lakes, oceans, and groundwater sources.
Importance of the Water Cycle:
The water cycle regulates climate, distributes fresh water across the planet, and supports
ecosystems. It also plays a critical role in agriculture and human survival by replenishing
groundwater and surface water supplies.
Understanding the water cycle helps us appreciate the delicate balance of Earth's systems and the
importance of conserving water resources.