Introduction
This diorama represents the Water Cycle (also known as the hydrological cycle). It is a continuous, natural process that circulates Earth's water among the oceans, atmosphere, and land. This endless movement relies on solar energy and consists of four primary stages.
1. Evaporation
- Location: Ocean
- Process: The sun heats the ocean's surface water. This heat transforms liquid water into an invisible gas called water vapor. The vapor then rises into the atmosphere.
2. Condensation
- Location: Sky / Atmosphere
- Process: As the water vapor rises, it cools. This cooling causes the gas to condense into tiny liquid water droplets. These droplets cluster together to form clouds.
3. Precipitation
- Location: Mountains and Land
- Process: Inside the clouds, water droplets collide and grow larger. When they become too heavy to remain airborne, gravity pulls them down. They fall to Earth as rain or snow, primarily over elevated areas like mountains.
4. Runoff
- Location: Rivers and Landscape
- Process: Rainwater and melted snow flow downhill across the land due to gravity. This water carves paths through the landscape to form rivers. The rivers eventually empty back into the ocean, completing the loop.
Conclusion
The water cycle is a closed-loop system in which no water is ever lost. It continuously recycles the planet's water supply, making it essential for sustaining all plant, animal, and human life on Earth.
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