The National Geographic Volcano kit comes with everything you need to make a little volcano with bubbling and crackling red lava. Read on for the National Geographic Volcano Kit review on how well it worked.
Click here to see the Volcano Kit on Amazon
National Geographic Volcano Kit Instructions and Assembly
The National Geographic Volcano Kit starts with making the volcano with a plaster mold. This is great if your kid is crafty and has patience. Mine is not! He just wanted to see the lava action.
Inside the box you’ll find a plastic mold and a bag of plaster that becomes the structure of your volcano. The instructions walk you through mixing the plaster with water until it’s smooth and pourable, almost like pancake batter.
This part goes quickest with a little adult help since plaster sets fast and can get messy. Once the mixture is ready, you simply pour it into the mold and let it settle. The mold should always sit on a covered, flat surface so nothing leaks out the sides.
Bringing Your Volcano to Life
This will be the toughest part if you have an impatient kid- after the plaster is poured in, the volcano needs to dry completely. The instructions recommend overnight!
So, we got started with a lot of excitement, had a 10-minute activity, and then got to wait.
Once the plaster is fully dry, you gently remove the volcano from the mold, and your miniature mountain is ready to be painted.
The kit includes paint and a small brush, so your kids can decorate their volcano however they would like.
Creating the Eruption
This is the moment we all wait for! The kit comes with pre-measured eruption powders made with citric acid and baking soda, plus optional “pop crystals” that add an exciting crackle to the reaction.
The instructions recommend placing the volcano on a tray or newspaper, then adding a scoop of the eruption powder right into the crater. We chose to take ours outside and sit it in the grass for a super easy cleanup.
Adding water triggers the reaction, causing bubbly “lava” to spill down the sides. Kids can experiment by adjusting how much powder or water they use to see how the eruption changes, making the science feel even more hands-on.
See our National Geographic Volcano Explode:
Watch the video below of the National Geographic Volcano Kit in action! First, we mixed up the powder and pop crystals, and then added water.
Click here to see the Volcano Kit on Amazon
National Geographic Volcano Kit Overall Review
The kit was easy to put together, but my son was disappointed to find he had to wait overnight for the mold to set.
This is different than the usual volcano making method that requires vinegar. You just mix the powder and pour water with this one.
Which means you can keep pouring the water, making a big lava mess, so I don’t think their recommendation for using newspapers or a tray is going to be enough. I really recommend taking this outside and doing it in the yard.
Overall, 4 stars out of 5. It does what it says, and you can get more than one use out if it.
Learning While You Play
The instruction booklet also includes a learning guide that explains the science behind the fun. It introduces concepts like magma chambers, pressure buildup, and why some volcanoes erupt explosively while others release slow-moving lava.
The kit also includes real volcanic rock specimens—such as pumice or a small geode—that kids can examine up close. The instructions point out these extras as a way to help connect the model volcano to the real geological processes happening on Earth.
Easy Cleanup and Safety Notes
The instructions consistently remind parents to help manage the mess. The eruption powders shouldn’t be inhaled or ingested, and plaster should only be handled before it begins to harden.
Cleanup is pretty easy (especially if you do it in the yard!): rinse the volcano in the sink and let everything dry.
The entire experience teaches science, creativity, and a little responsibility—without requiring a huge space or complicated setup.
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