Igneous rock forms when molten sediment and minerals cool either on land from lava flows, or under ground as magma seeps into cracks in sedimentary rock. In our demonstration, the water dissolving the Borax powder is like the sediment being melted and mixed into magma below the Earth's surface. We inserted a pipe cleaner into the liquid to act as a crack in the sedimentary rock where the magma will cool. On the pipe cleaner, crystals will form like the magma would form as it cools. We added food coloring to the water in hopes the crystals will come out in different colors. Pictures by McKenzy L.
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