The central idea of the article is that water on Earth goes through a continuous cycle, changing from one form to another. This is supported by the fact that water evaporates due to the Sun's heat and condenses into clouds, and when the water droplets in the clouds become heavy enough, they fall back to the Earth as precipitation.
The central idea of the article "The Water Cycle" on Newsela is that water on Earth continuously moves through a cycle, changing from one form to another.
One detail from the article that supports this idea is that water evaporates from the surface of oceans, lakes, and rivers due to the Sun's heat. This evaporated water then condenses into clouds.
Another detail mentioned in the article is that when the water droplets in the clouds become heavy enough, they fall back to the Earth's surface as precipitation, which can take the form of rain, snow, sleet, or hail. These details highlight how water goes through different stages in the water cycle, demonstrating the central idea that water is constantly changing form as it moves through the cycle.