The Water Cycle: A Never-Ending Journey — 4th Grade Reading Comprehension Worksheet

Water is always moving, even though it might not look like it. The same water that fills our oceans, rivers, and clouds has been recycled again and again for billions of years through a process scientists call the water cycle. This never-ending journey has four main stages that keep water moving between the sky and the Earth.

The cycle begins with evaporation, when the sun heats water in oceans, lakes, and rivers, turning it into an invisible gas called water vapor that rises into the air. Next comes condensation, when that rising water vapor cools down high in the sky and turns back into tiny droplets, forming the clouds we see above us. As more droplets gather and clouds become heavy, precipitation occurs, and water falls back to Earth as rain, snow, sleet, or hail.

The final stage is called collection, when precipitation gathers in oceans, lakes, rivers, and underground reservoirs, ready to begin the cycle all over again. Some water also gets absorbed by plant roots and later released back into the air through a process called transpiration, which works much like evaporation but happens through leaves instead of open water.

Without the water cycle, life on Earth would not survive. It provides fresh drinking water, waters crops that feed people and animals, and shapes the weather patterns that affect our daily lives. Every raindrop that falls has likely been part of this cycle for millions of years, traveling through oceans, clouds, rivers, and even the bodies of living things.