It’s a spooky season for witches, skeletons, and, STEM activities?
Halloween can be the BEST time for science and STEM, just because creepy science is so much fun! Halloween STEM activities are a brilliant way to show kids how science can be cool.
For this experiment, give the traditional density jar science experiment a Halloween twist by making a Halloween density jar! Kids will love dropping spooky objects into liquids and seeing how far they go down into the depths.
How to Make a Spooktacular Halloween Density Jar
A density jar is a fun way to learn about the density of objects, and have fun with science at the same time. You probably already have everything you need to make this density jar right now.
What you need to make a Halloween Density Jar:
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Dye the water orange with food coloring. Don’t dye the other ingredients.
Put your syrup in the bottom of the jar first.
Add the water next, and finally, the oil.
Have the kids drop the toys into the jar one at a time.
Let the kids guess where they think the objects will land.
The densest objects will descend all the way to the bottom of the jar.
The least dense objects will be floating at the top.
Our favorite object was the spider, that was heavier than the oil but floated on top of the water. It made our Halloween density jar quite creepy!
Use this time to talk about the density of liquids and objects with kids. What makes one liquid denser than another?
What happens if you mix up the jar? Will the ingredients separate again?
What makes the eyeball float on the top of the jar?
More Halloween Science Experiments
Want More Halloween STEAM? (Science, Technology, Engineering, Art, and Math)
Download our free printable Halloween STEM activities calendar!
Find more amazing Halloween STEAM activities in the STEAM Kids Halloween book!