1. Volcanic Activity Volcanoes, explosions and more!

2. Igneous __________- classified by shape, size, and orientation Intrusions

4. Magma Source Areas Where Magma Forms Upper mantle depths of 50 to 250 km High temps (800-1100 C), medium pressure Rocks melt, or partially melt Divergent plate boundaries Above subduction zones Hot spots

5. Major Volcanoes Around the World

6. Wahalua Visitors’ Center Aflame in Hawaii Source: Photograph by J.D. Griggs, USGS Photo Library, Denver, CO.

7. Ruins of the Visitors’ Center After Lava Cooled Source: Photograph by J.D. Griggs, USGS Photo Library, Denver, CO.

8. There are three types of volcanic cones: ______ – explosive eruptions, small but steep slopes, pyroclastics (like ash) _______ – nonexplosive eruptions, fluid basaltic lava, gentle broad slopes _________ – alternating between lava and pyroclastics, explosive and nonexplosive eruptions, steep and tall Cinder Shield Composite

9. A common type of volcano is called a _____ _____, these can explode like a bottle pop due to high pressure cinder cone

10. Kilauea on Hawaii is a good example of a _______ cone, with less explosive eruptions and less viscous lava. shield

11. Mt Rainier and Mt St Helens are good examples of __________ cones, with explosive eruptions and erupted materials such as ash, bombs, and blocks. Mt St Helens Mt Rainier composite

12. Crater Lake in Oregon is a __________formed from the collapse of the gigantic volcano Mount Mazama. caldera

13. Famous Volcanic Disasters Pompeii was destroyed and completely buried during a long catastrophic eruption of the volcano Mount Vesuvius spanning two days in 79 AD. The eruption buried Pompeii under 4 to 6 meters of ash and pumice, and it was lost for over 1,500 years before its accidental rediscovery in 1599.volcanoMount Vesuviusashpumice