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Exploding Volcanoes

Exploding Volcanoes. Second Grade State Standard: 3(b) Students know that rock is composed of different combinations of minerals. By Elizabeth Ramirez. Principal types of volcanoes. Cinder cones Composite volcanoes Shield volcanoes Lava Domes. How are volcanoes formed.

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Exploding Volcanoes

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  1. Exploding Volcanoes Second Grade State Standard: 3(b) Students know that rock is composed of different combinations of minerals. By Elizabeth Ramirez

  2. Principal types of volcanoes • Cinder cones • Composite volcanoes • Shield volcanoes • Lava Domes

  3. How are volcanoes formed • Deep in the earth is very hot. It is very hot that rocks melt. • The melted rock is called magna. • The magna is lighter than the rocks around so it rises. • Sometimes the magna finds a crack or hole in the earth’s crust and burst through.

  4. Why do volcanoes erupt? • Pressure builds deep in the earth where the magma is. • Volcanoes gases are the driven forces of eruptions • Volcanoes gases are dissolved in molten rocks

  5. Structure of a typical composite volcano

  6. Volcano’s Websites • www.Proteacher.com • www.Emunic.emich • www.nebo.edu/misc/learning

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