25 Water Science Experiments and Activities!

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Water is something we can all get our hands on.  Following are 25 wonderful water science experiments and activities you can use in your teaching.  These are great for extra warm days outside in the summer, or inside at any time of year.  There is something about learning with water that gets kind excited!

1. Rising Water Science Experiment

This is a cool experiment that makes the water rise into the glass!  It’ll wow your kids.

2. Water Chemistry Experiment with at Home Water Testing

Test your water with and at-home water testing kit.  It’s fascinating to see what’s in the water near you.

3.  Water Striders: Insect Science

This fun water experiment demonstrates how insects can glide on water.

4. Dry Ice Bubbles

Use dry ice, water & soap to make these amazing dry ice bubbles!  This is the ultimate water science activity!

5. Water Science: Water Pump Sprinkler

This fun water science activity demonstrates how a sprinkler or a water pump work

6. Water Drop Maze

This is just all around fun!

7. Homemade Water Clock: Ancient Science

Did you know they used water clocks to tell time anciently?  This is a cool history and science lesson in one.

8. Rainbow Walking Water Experiment

This is a classic water experiment that everyone loves!

9. Preschool Counting: How Many Drops to Fill the Dot?

Math and science with water? Yes, please!

10. Dissolving Science Experiment- What Dissolves in Water?

Learn what things dissolve in water. This is a great water science activity for your littler ones.

11. Colored Convection Currents Science Experiment

This water science experiment is cool and colorful!  Watch conviction currents at work in colored water.

12. Science Art: Alcohol and Watercolor Painting

You know I love pairing science with art!  This project also involves watercolor painting. It’s beautiful & fun!

13. How to Make Oobleck: Water + Cornstarch

Mix water with cornstarch in this awesome sensory science activity.

14. Homemade Thermometer Science Experiment

Did you know you can make your own thermometer? This is a neat weather science activity that will fascinate everyone!

15. Homemade Straw Glasses

Ok so maybe we used juice, but it would work with water, too!  These are so much fun to make with your kids! Learn the science behind how the liquid comes up through the straw, too.

16. Homemade Toy Rubber Band Boats

Wind up boats are the perfect water learning activity.

17. Submarine Science

Make your own mini submarine in this water science activity!

18. Magnet Boats

These simple little boats are a great water learning and play activity for kids.

19. Environmental Science: Oil Spill Clean Up Experiment

Learn about keeping our ocean water clean with this oil spill clean-up activity.

20. Water Filtration Experiment

This is a great activity to learn about how water filters work.

21. Sink or Float Water Science

I don’t have photos of this activity, but it’s a fun and easy one to do anytime. Gather some small objects- coin, rock, plastic toys, screws, beads, sticks, etc…  Fill up the sink, or a large bowl with water.  Before putting the objects into the water, have your child divide the objects out on the paper with the words Float, Sink according to their predictions.    After you test them in the water have your child draw or write them onto the graph.  You could easily make this chart reusable by laminating it.  Click above on the picture to download the chart.

22. Water Xylophone

Make water music!  We love this water learning and play activity.

Make music with water by making your own Water Xylophone!  Fill up several glasses with water to make different notes.  We tried to play a song on the glasses.  Make it more interesting by coloring the water rainbow colors!

23. Simple Science: Making a Solar Still

Filter water using the sun!

24. Blooming Paper Flowers

This little experiment is so much fun!  Watch these paper flowers bloom in water!

25. Rain Painting