How to Make a Water Cycle Bag

Explore the water cycle with this simple project using a plastic bag. Go on an adventure to explore the magical journey water takes as it moves around planet Earth.

This process is called the Water Cycle, and it’s essential for life on Earth. Let’s dive into the steps of the water cycle with some fun facts, and then learn how to make a Water Cycle Bag at home or in your classroom.

The Water Cycle Steps

Evaporation: When the sun heats up water in rivers, lakes, or oceans, the water turns into vapor or steam and goes up into the air. Imagine the water like a superhero, rising high into the sky to start its journey!

Condensation: As the water vapor goes higher, it meets cooler air and turns back into tiny droplets of water. These droplets group together to form clouds. It’s like when you see steam on a bathroom mirror turn back into tiny water droplets!

Precipitation: When the water droplets in the clouds get too heavy, they fall back to the Earth. This can be as rain, snow, sleet, or hail. Think of it as the clouds getting too full and dropping the water back down to visit the Earth.

Collection: Once the water falls back to the ground, it collects in oceans, lakes, rivers, and even underground as groundwater. Some of it will start its journey all over again! It’s the water’s home where it rests before going on its next adventure.

As a helpful tip, use the graphic organizer and Water Cycle worksheet to guide you for each step. Then, begin exploring the water cycle with this fun experiment. 

DIY Water Cycle Bag

What You Need:

• 1 clear Ziplock bag
• Permanent markers
• A little bit of water
• Blue food coloring (optional)
• Tape

Watch the video to learn how the water cycle occurs in nature. Then, explore your own water cycle with this simple activity.

Let’s Make It:

Draw the Cycle: On your plastic bag with permanent markers, draw the sun in one of the top corners and a large cloud in the opposite top corner. At the bottom, draw a body of water like an ocean or lake. Feel free to get creative and color your water blue with markers or add some fish!

Add Water: Fill the bag with a small amount of water. You can add a drop of blue food coloring to make it more visible if you like.

Seal and Hang: Seal the bag tightly and use tape to hang it on a window that gets plenty of sunlight.

Observe: Watch over the next few days as the sun heats the water, causing it to evaporate. You’ll see tiny water droplets forming on the inside of the bag, which eventually might “rain” down into your drawn ocean. Congratulations, you’ve just made the water cycle in action!

By making your very own Water Cycle Bag, you get to see how water moves from Earth to the atmosphere and back again, right in your own home or classroom. It’s fun to check your bag every day and observe what’s happening. How cool is that?

Understanding the water cycle helps us appreciate how important water is to every living thing on Earth, including us! Remember to use water wisely and keep exploring the mysteries of our planet.