Volcano experiment

We were very excited to explore the idea of volcanoes and eruptions.

We added some food colouring and baking powder to a baking tin.

Next we squirted some vinegar onto the baking powder and watched what happened!

The baking powder started to foam and bubble over so that all of the colours started to mix together.

The children were fascinated when the mixture began to increases in size and we were able to model lots of language about size! After the experiment the mixture began to harden and crystallize, the children were very interested in the change of consistency and enjoyed poking the hard mixture and comparing it to the foamy one.