Mad Science

Mad Science

Club Members make stratovolcanoes

In Mad Science we have been exploring our Earth, latitude and longitude, structures around the world, and finally, Friday, May 24th, was VOLCANO SCIENCE.  We started by making models of stratovolcanoes.  During this time, we talked about the different types of volcanoes around the world – volcanoes on land and in the ocean.  We talked about the different types of lava that come from these volcanoes.  When we got back together later in the day, we did some experiments.  The first was of low viscosity lava (runny) that resulted in the flat basalt fields.  We used vinegar, dish soap and food coloring mixed together.  We added a bit of baking soda and watched the fun.  The next experiment was typical of the Hawaiian volcanoes, with a similar result as the first, but with the lava being thicker and oozing down the sides.  The third was like a stratovolcano, using Alka Seltzer tablets and a little water in film canisters.  It was hard to anticipate just how much pressure had to build before each one popped!  The last was the most destructive of the volcanoes and what caused Crater Lake to come into existence.  Using shredded paper and flour, we formed a hollow in our mountain.  Placing a balloon in the hollow and covering it up with flour was next.  We blew the balloon up and when it reached the surface, we popped the balloon.  The result was a deep hole with vertical sides.  Many thanks to Megan, Ashlyn and Alberto for their help with set-up, helping other students, and of course, the clean-up after!

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