Volcanoes & EarthquakesEarth is constantly changing. Massive pieces of its outer layer are slowly sliding under, over, away from, or past each other. Earthquakes shake the continents and oceans, and volcanoes spew out the molten insides of our planet. By studying these awe inspiring and devastating natural phenomena, you can learn more about the inner workings of Earth. Build and erupt a model volcano with plaster based lava that hardens after each eruption. The volcano can
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