After the kids had painted and pieced together a volcanic eruption and played with their dinosaurs a bit, I set up part two of our science play: the Coconut Volcano Science Experiment! This is actually our second time making a coconut volcano and I believe if I had enough baking soda and vinegar, my kids would do this activity over and over forever! I don’t blame them!!
To get ready for our experiment, I added one of our breakfast trays to the tub. Both kids still have plenty of room with the tray in place and it provides a nice surface for them to work without knocking stuff off the side of the tub onto the bathroom floor.
Next I put some baking soda into a plastic yogurt cup. We save these and applesauce cups and use them for everything!!
Then the kids placed our empty coconut shell on top of the yogurt cup. We used the half of the shell that has 3 holes in it from where the eyes were punched out to drain the coconut water. You can see more activities we’ve done with our coconut here.
In a cup, I mixed together our lava!
To make the lava, I simply mixed together vinegar, red food coloring, and a squirt of dish soap. Then the kids used a baby nasal aspirator to suck up the liquid from the cup,
and squirt it through one of the holes on the top of the coconut.
In a few seconds, bubbly red lava would come out of the volcano and ooze it’s way down the sides!!
Once the bubbles would stop, we’d simply rinse the coconut and yogurt cup out in the water, add some more baking soda, put it all back together, and make another volcanic eruption. The kids took turns rinsing the cups and squirting the vinegar. Using their hands to squeeze the aspirator is great fine motor practice which helps with future writing!!
We only used about a cup of baking soda and a cup of vinegar but we were able to make the volcano erupt many, many times!!The lava eventually turns the kids’ bath water red as it spills off the tray. Yet another fun aspect of this bath!!
The kids had fun touching the bubbles as they came out of the volcano…
and playing with their dinosaurs who were trying to get out of the path of the hot lava coming their way!
This really is one of the most fun science play activities we’ve done so far!!
Now be sure to hop over to Bath Activities for Kids to read all about Mud Science for Kids!
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