💧 Backyard Water Cycle in a Bag

Make it rain... from your window!

Arthur says: “Evaporation, condensation, precipitation—oh my! Let’s turn your window into a mini sky and make the water cycle come alive in a ziplock bag!”

🔧 What You’ll Need:

• 1 zip-top plastic bag (sandwich size or quart)
• Water
• Blue food coloring (optional)
• Permanent marker
• Clear tape
• Sunny window

🧪 Steps:

1. Use your marker to draw a sun, clouds, and ocean waves on the outside of the bag.
2. Fill the bag with about ¼ cup of water (add a drop of blue food coloring if you like).
3. Seal the bag tightly and tape it to a sunny window.
4. Watch it over time! You’ll start to see water evaporate, condense as droplets, and “rain” back down.

📘 What You’ll Learn:

The water in your bag cycles just like the real ocean—warming in the sun, turning into vapor, then falling back as “rain.” This cycle powers weather, fills rivers, and keeps our planet hydrated!

Pocket Fact: The ocean produces over 85% of the world’s evaporation—it's Earth’s biggest “water factory” in the sky!