Summer Science: Watermelon Volcano

science watermelon volcano

Ready for a summertime twist on a classic experiment? Watermelon is in season and it’s the perfect time of year for outdoor science experiments. So, head to the grocery store, pick up a watermelon, and get ready to do a lot more than just eat a tasty treat! Here’s how it works:

What you need:

  • A watermelon (it can be any size, whatever size your family feels like eating really)
  • Baking soda
  • Vinegar
  • Dish soap
  • Optional: Food coloring

What to do:

  • The goal of this is not to waste the watermelon. Start out as if you are carving a pumpkin – cut a hole out of the top of the watermelon. You want the hole to be big enough that you’ll be able to scoop out the inside of the watermelon, but the smaller the hole, the better your volcano eruption will be.
  • Scoop out the inside of the watermelon with a melon baller or spoon. If you like, you can take a break now and enjoy a little snack.
  • Put about a half a cup of baking soda in the bottom of the emptied out watermelon. Add a couple of squirts of dish soap and, if you’d like, the food coloring.
  • Now you’ll want to take your watermelon outside for this next part. Begin pouring vinegar into the watermelon and wait and watch for a giant, bubbly explosion! The chemical reaction between the vinegar and the baking soda is what causes the explosion, the dish soap just adds a little more pep!

Have fun and don’t forget to check out our free trial!