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Great activity to demonstrate the water cycle (WOW Journey). 2 liter soda bottle cut in half. Put about an inch and a half of warm water (w blue food coloring) in the bottom. Invert the top of the bottle with the lid on and fill with ice. Watch the water condensate and watch it "rain"

Create an explosion in a bag to explain the the three states of matter! LIQUID - Pour 1/4 cup of warm water into a ziploc bag. Next, add 1/2 cup of vinegar to the water (food coloring optional). SOLID - In a tissue, dump 3 tsp. of baking soda. Fold the tissue up like a square. Then, close the bag up, leaving space to drop the pouch. Zip it up, let go of the pouch, and watch the bag expand - GAS! Soon the bag will look like a giant bubble. Hold it up and look what's happening inside, an…

water cycle bag - I used to do this demonstration with third graders. add a drop of blue food coloring to the water if desired. A very effective experiment that works best in a sunny window.