Lively Lava Lamps!

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As part of our science week investigations we made simple yet effective lava lamps.

We discussed how and why the different materials behaved the way they did and were all amazed at just how easy they were to make.

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Here’s how to do it, in case you want to try it at home:

You will need:

Vegetable oil

Water

Food colouring

Salt

A clear cup or container

What to do:

Fill your cup with water (3/4 full)

Add food colouring (about 5 drops)

Fill the rest of the cup (1/4) with vegetable oil (or similar)

Sprinkle salt in the top

Watch what happens …

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Can you explain the different effects or reactions?

 

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