![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5o0qmHCZTr9BeLY8jOQmQqJ7nncu5RSX2nwFpEuqxBFZPZ5P3c2uAuzeGd780w23w6filfRtejPgHMqzsq5t4XXVVkU1IqTV2Te8IH71K_AEakMhP-5Ls52YWNFdAO4ZiPLaD03vDk6s/s400/89_image.jpg)
This activity models the rise of magma through the 'crust'. Some of it erupts on the surface representing a lava flow whilst some sets within the water mass representing igneous intrusions. Now you really can see what the plumbing system of a volcano looks like!
This is one of many Earthlearningideas relating to volcanic eruptions - click on the Keyword Index on our website to find more.