Ocean Science Activities

Underwater Volcano Science Experiment for Kids

This simple underwater volcano experiment allows children to observe an undersea volcano, learn about density, and go through the scientific method. This simple science experiment for kids is good for preschool, pre-k, kindergarten, first grade, and 2nd graders too.

This simple underwater volcano experiment allows children to observe an undersea volcano, learn about density, and go through the scientific method. This simple science experiment for kids is good for preschool, pre-k, kindergarten, first grade, and 2nd graders too.

Underwater Volcano

I love using simple science experiments to help kids discover the wonder of science and learn to think critically about the world around them. In this underwater volcano demonstration, children will get to see not only what a volcano in the ocean might look like, but explore a density experiment for kids too. All you need for this easy science experiment are a few common household items. Whether you are a parent, teacher, or homeschooler Рyou will love this science project for preschoolers, kindergartners, grade 1, and grade 2 students.

This experiment has a cool WOW moment with simple household items you already have in your kitchen: large TALL clear container film canister aheavy object that will weigh down the smaller container (we've used small rocks and coins) water red food coloring

Underwater Volcano Experiment

This experiment has a cool WOW moment with simple household items you already have in your kitchen:

  • large TALL clear container
  • film canister
  • a heavy object that will weigh down the smaller container (we’ve used small rocks and coins)
  • water
  • red food coloring

Hot and Cold Water Experiment

Density Experiment for Kids

Start by filling the large container with cold water. The colder the better to make a more dramatic contrast between the two temperatures.

Now prepare your smaller container by putting a rock or two in the bottom of the small container.Add a couple of drops of food coloring in the small container – this allows us to see the movement of the hot water in the cold water. Finally, fill the small container with very hot water.¬† The hot water should cause the food coloring to mix without stirring, but feel free to stir with a chopstick to stif if yours isn’t.

density experiment for kids

Hot and Cold Water Experiment

While keeping the small, red hot water container upright, gently release the small container in the large container. Observe as the red water erupt from the small container like a volcano!

density for kids

Easy science experiments

Have children make observations. What is happening?

Science Experiment for Kids

Kindergarten science experiments

The food coloring is now staritng to evenly distribute. WHY?

HINT: The hot water and cold water are making warm water. Once all the water is the same tempearture the food coloring will have blended completely.

easy science experiments

Science Experiment for Kids

So other than looking cool, what are you learning? Well kids are learning a couple things in this simple science experiment:

  • Density – hot water is less dense than cold water. As a result, the warmer water will rise to the top, while the cold water sinks to the bottom. We exagerated the effect to produce the underwater volcano demonstartion by placing a rock to quickly sink the small container. As a result, the hot water shoots up and looks like a volcano erupting.

kindergarten science experiments

  • The Scientific Method ‚Äď help kids learn how to think critically even from a young age.
    • Ask a Questions – What will happen if we put hot water inside cold water?
    • Form a hypothesis ‚Äď I think the hot water will spread into the cold water.
    • Try an Experiment ‚Äď Do the experiment
    • Observe and record ‚Äď The red, hot water burst straight up out of the container
    • Draw conclusions ‚Äď Something about the hot water caused it to move out of the jar into the cold water. My findings support my hypothesis.
    • Ask More Questions – there were only 2 differences: temperature and color. If you change the color of the hot water will you still have the same results?
    • Try a 2nd Experiment – Do the Experiment and see if your Conclusion holds.
  • Hot and cold molecules ‚Äď Teach what molecules are and why the hot and cold molecules are different.
  • Following directions ‚Äď Following directions is an important skill for students to learn. If you skip directions of adding a rock, the temperature of the water, or adding food coloring, the experiment would be a bust.

See a real underwater volcano errupt.

Ocean Color by Number Worksheet Free Octopus Color Matching Young children will have fun learning to recognize numbers, count to to, and tracing numbers with these number worksheets 1-10. These number worksheets are great for working on kids' handwriting and fine motor skills. Use these 1 to 10 worksheet pages with toddler, preschool, pre-k, and kindergarten age children. Simply print pdf file with number tracing worksheets pdf and you are ready to play and learn with super cute ocean worksheets for kindergartners!

Ocean Activities for Kids

Looking for more ocean activities for kids? You will love these clever, free resources and ideas:

Kids will be excited to learn and explore when making this ice cream volcano! This is a combination of an ice cream activity and easy volcano experiments for one EPIC, memorable summer activity for kids! Try this summer experiment as part of your ice cream theme with toddler, preschool, pre-k, kindergarten, first grade, 2nd grade, and 3rd graders. This project causes a super cool, baking soda and vinegar reaction that will create a fun WOW moment for kids! mentos and soda experiment How to Make a Newton's Cradle You will love these simple summer science experiments that help kids learn and explore with summer seashells! For this seashell activities all you need are a couple simple materials to try your hand at an EASY acid base experiment. Try this summer science with toddler, preschool, pre-k, kindergarten, first grade, and 2nd graders too. I just love using summer activity for kids that are fun and educational too!

Summer Fun

Looking for more outdoor activities for kids and things to do in the summer? Your toddler, preschool, pre k, kindergarten, and elementary age kids will love these fun ideas to keep them busy all summer long:

This plane will FLY! I was stunned that this pool noodle airplane craft flew as high and as far for as long as it did. If I was stunned, my kids were in complete awe! Try this plane craft with preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, and 4th graders too. This pool noodle craft is perfect for lazy summer days as a summer craft for kids or as part of a transportation or plane theme! bubble snakes beach worksheets watermelon science

Summer Activities for Kids

Leak-Proof-Bag color changing flowers magnets for kids sidewalk chalk paint

Fun Summer Activities for Kids

About the author

Beth Gorden

Beth Gorden is the creative multi-tasking creator of Kindergarten Worksheets and Games. As a busy mother of six, she strives to create hands-on learning activities and worksheets that kids will love to make learning FUN! Browse through more than 200,000 pages of FREE worksheets & educational activities for kindergartners! Plus don't miss her other sites www.123homeschool4me.com and www.preschoolplayandlearn.com

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