Summary
Traces a water molecule through the water cycle — evaporation, condensation, precipitation, collection — showing that water on Earth is recycled continuously and that a water molecule in your glass might have been in a dinosaur once.
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All ages
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Teaching resources
Discussion questions
Discussion
- What are the four stages of the water cycle? Describe what happens at each.
- Where does the energy that drives the water cycle come from?
- If water is constantly being recycled, where do droughts come from?
- Could you be drinking the same water that a T. rex drank? Explain.
Quick work-a-long
Vocabulary: water cycle, evaporation, condensation, precipitation, collection, transpiration.
Try it: Place a clear plastic bag with a few tablespoons of water on a sunny window. Seal it. Come back in an hour — what do you observe? Draw and label the mini water cycle happening in the bag.