Water: The Super Traveler
Water cycles continuously through the geosphere, hydrosphere, atmosphere, and biosphere in all its different forms. Water evaporates into the atmosphere from the land and the sea. Plants and animals use and reuse water and release water vapor into the air. Once in the air, water vapor circulates and can condense to form clouds and precipitation, which falls back to Earth. At one time or another, all of the water molecules on Earth have been in an ocean, a river, a plant, an animal, a cloud, a raindrop, a snowflake, or a glacier!
In this lesson students will discover that models can be an important tool to use to help identify and explain the water cycle processes and the essential elements of the water cycle. Students will observe a model that simulates parts of the water cycle. They will be able to identify and explain the essential elements of the water cycle, and have a better understanding of how the water cycle impacts the environment.
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