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Structure of the Earth System Station 3 – Constructive Forces: Volcanos Be sure to document in your table on contents! Volcanoes are a constructive force in two main ways. When a volcano explodes, it can blast extremely large amounts of rock and lava quite far - developing hills or even small mountains. It also releases lava that flows over the ground and cools - hardening into a crust which later forms soil. Activity 1 Define these vocabulary words on the vocabulary sheet for this station: volcano, magma, lava Activity 2 Read the information on volcanoes at http://www.weatherwizkids.com/weather-volcano.htm Answer the following question: 1. 2. 3. 4. 5. 6. How are volcanoes formed? Why do volcanoes erupt? Explain the role volcanoes have in the plate tectonic theory. What is the Ring of Fire? Why is the eruption of Mount St. Helens important? What is a tsunami? Activity 3 Watch the following video clip. http://www.schooltube.com/video/ec45190408bf79b639fb/Mount%20Pinatubo Pretend that you lived near Mount Pinatubo at the time of the explosion. Explain, in detail, how the eruption would have affected you, your daily activities and your family/friends.