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Watermelon Volcano Experiment – Summer Activity for Preschoolers

ByBeth Gorden

Looking for fun things to do with watermelon for your upcoming watermelon theme or National Watermelon Day on August 3rd? Kids will go nuts over this watermelon volcano project! This watermelon experiment allows kids to witness the chemical reaction when baking soda and vinegar mix . This summer activity for kids is such a fun and easy volcano experiment perfect for toddler, preschool, pre-k, kindergarten, first grade, and 2nd graders to try.

Looking for fun things to do with watermelon for your upcoming watermelon theme or National Watermelon Day on August 3rd? Kids will go nuts over this watermelon volcano project! This watermelon experiment allows kids to witness the chemical reaction when baking soda and vinegar mix . This summer activity for kids is such a fun and easy volcano experiment perfect for toddler, preschool, pre-k, kindergarten, first grade, and 2nd graders to try.

Watermelon Volcano

Every kids needs to try the a volcano experiment at some point. While young kids may not understand about volcanoes or be ready to make a complex project, they will appreciate the WOW effect in this chemistry experiment. This volcano science experiment combines a watermelon activity with fun summer activities for preschoolers, toddlers, kindergartners, grade 1, grade 2, and gade 3 students. This watermelon volcano is so simple it will only take you a couple minutes to pre and a couple minutes to watch the watermelon explosion!  Whether you are a parent, teacher, or homeschooeler – you will want to add this to your watermelon day activities or summer camp ideas!

watermelon activity

Easy Volcano Experiment

All you need to try this simple watermelon project are a few simle materials that you already have on hand. This kitchen science project is perfect for busy families as you can do this summer science activity in just a couple minutes with common things you already have on hand!

  • watermelon – any size you like
  • knife (for adult to use and supervise)
  • spoon or scoop
  • 1 cup baking soda
  • 1/4 cup dish soap
  • red food coloring
  • vinegar

watermelon day activities

Watermelon Activities

Start by preparing your watermelon to become a volcano. You can use any size of watermelon you like, just adjust the baking soda and vinegar accordingly for a big erruption! Cut a hole in top of watermelon that is just big enough to scoop, but the smaller the hole, the better for your volcano erruption as the lava will all be forced up the hole. Scoop out the inside like you carve a pumpkin. The reason we scoop it out isn’t for the science experiment with a watermelon, it is to avoid being wasteful with food! All we need for this watermelon activity is the watermelon container or shell, so-to-speak.

watermelon science

Watermelon Science

When you are ready for your erruption take your watermelon fruit outside or put on a tray with the surrounding surfaces covered – just in case! Now add  baking soda, dish soap, and red food coloring (the more the better for a deep red color).

NOTE: You don’t need the dish soap to make the summer science experiment work, but it will make it bubble!

the vinegar and baking soda reaction will beginn almost immediately

Watermelon Experiment

Pour in vinegar, about 1-2 cups, until you get some fun fizz starting to come up.

Watermelon Activities for preschoolers

Watermelon Activities for Preschoolers

The volcano will begin to fizz and flow the “lava” from the inside down the side of the watermelon!

Summer Activity for Preschoolers

Watermelon Theme

Your kids will love this fun and silly summer experiment!

watermelon experiment

Easy Summer Activity

Make sure you do this easy summer experiment on a baking dish with a lip or outside to contain all the red lava that comes out.

summer activities

Baking Soda and Vinegar Reaction

This easy summer science is super CHEAP! Just use a watermelon you were going to eat anyway, and add some inexpensive baking soda and vinegar, some food coloring for color, and wala!

watermelon theme

Vinegar and Baking Soda Reaction

If your kids can’t get enough of this science experiment, it’s normal. Ours begged to do it again and I was happy to oblige! Just dump in more baking soda and vinegar, plus food coloring and dish soap if you wish. No need to rinse or clean the tray unless you are out of room on the tray. That’s part of why we like to do our project outside. As you can see ours was more pink the second time because I used most of our food coloring the first time around. But guess what, the kids didn’t care – they though it was still super cool and giggled with excitement.

Looking for fun things to do with watermelon for your upcoming watermelon theme or National Watermelon Day on August 3rd? Kids will go nuts over this watermelon volcano project! This watermelon experiment allows kids to witness the chemical reaction when baking soda and vinegar mix . This summer activity for kids is such a fun and easy volcano experiment perfect for toddler, preschool, pre-k, kindergarten, first grade, and 2nd graders to try.

Summer Activity for Preschoolers

So what is happening in this cool fizzy chemistry experiment? Basically you are creating an acid and a base experiment. The vinegar is an acid and the baking soda is a base. When they mix they produce carbon dioxide. This fizzing gas will take up more and more space forcing the liquid in your watermelon to be forced up and out to create room for all the newly created CO2.

fluffy watermelon slime watermelon suncatcher craft watermelon activity practicing upper and lowercase letters with watermelon printable letter mats Looking for a quick, easy, and fun watermelon activities for preschoolers? This watermelon squish bag is a fun watermelon activity for children to use as a summer activity or along with a watermelon theme. This NO MESS activity allows toddler, preschool, pre-k, kindergarten, and first graders to draw, write letters, or squish the watermelon looking sensory bag. So simple, but so fun!

Watermelon Day Activities

Looking for another watermelon activity or two to make a week long watermelon theme or dive into the letter w is for watermelon? You will love these fun activities and free printables:

See all our watermelon activities for kids, watermelon activities (for older kids) and our watermelon activities for preschoolers

vinegar and baking soda rocket dancing raisins Lemon volcano experiment Frainbow Baking soda and vinegar experiment

Baking Soda Vinegar Experiment

There are so many fun ways to play and teach kids about chemical reactions using a baking soda and vinegar reaction. Here are some of our favorite baking soda and vinegar activities.

bubble snakes mentos and soda experiment pin color changing playdough beach slime

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:

Leak-Proof-Bag color changing flowers  2 ingredient sidewalk chalk paint ocean slime activity

Fun Summer Activities for Kids

Beth Gorden is the creative multi-tasking creator of Preschool Play and Learn. As a busy homeschooling mother of six, she strives to create hands-on learning activities and worksheets that kids will love to make learning FUN! Beth is also the creator of 123Homeschool4Me.com and kindergartenworksheetsandgames.com where she shares more than 100,000 pages of FREE worksheets,& educational ideas for PreK-8th grade.

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