Melting, Evaporating, Condensing, Freezing . . . water, water . . . it’s everywhere. We’ve been investigating water in all it’s wonderful states! This week we are wrapping up our unit on States of Matter. We’ve observed water change from a solid to a liquid, from a liquid to a gas, from a gas to a liquid and back to a solid again!
What’s the key to all these changes? HEAT! Add it to a solid and it becomes a liquid; add it to a liquid and voila-it becomes a gas. We learned we can reverse these changes by removing heat. When warm air is cooled, water vapor condenses and becomes a liquid again.
This week we are connecting our knowledge of the states of matter to the water cycle. The kids loved reading A Drop Around the World by Barbara Shaw McKinney. They were amazed to learn that the water we drink today is the same water dinosaurs drank! How can this be? The WATER CYCLE . . . it cycles water all around the earth and has for millions of years. Enjoy the video below of our last experiment on freezing.