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Salt Volcano

Salt Volcano
Messiness: Low
Age Range: 4y - 9y
Estimated Time: <30 mins

Activity Designer

Stephanie Sims
167 Projects

We know that oil and water doesn't mix...but what happens when you add salt? Let's play with science and find out!

How We Did It

Salt Volcano

This neato experiment only needs a few ingredients that everyone will have!

Salt Volcano

We poured the water into the jar. Maddie filled it about 2/3 full.

Salt Volcano
Next went in the oil--about 1/3 of a cup or so.
Salt Volcano

One single drop of food coloring...

Salt Volcano

There it is, there...what is it doing? Hmm...just sitting there, resting at the bottom of the oil...

Salt Volcano
Maddie shook on some salt.....
Salt Volcano
Whoa!! What's it doing!?!
Salt Volcano
Oil is less dense than water, so it floats on top of water. When salt is dumped on, it sinks through the oil taking some of the oil with it to the bottom of the jar. As the salt dissolves in the water, the oil rises back up to the top of the jar.... creating movement over and over again. Go ahead! Put more salt in! Then do it again!!


science water


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My child and I completed Salt Volcano.

posted by: Sheena on 8.5.2013

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