1. Volcanic Activity Chapter 9

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

3. Major Volcanoes Around the World

4.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools Composite Cone/Stratovolcano The volcano is built up of alternate layers of LAVA and ASH. They can explode with great violence. Mt St Helens – USA 13,211 ft Conelet Dyke Crater Ash layer Lava Layer Flank eruption Lava Flow Crust Pyroclastic Flow

5. 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

6. Crater Lake Crater Lake in Oregon is a __________formed from the collapse of the gigantic volcano Mount Mazama. ________________in the center of the lake is a small cinder cone. caldera Wizard Island

7. Shield ( Basic) Cone Shield Volcanoes are enormous features built up only from layers of lava. They produce lots of lava but they tent not to erupt violently. Mauna Loa Hawaii –USA 56,000 ft 250 miles 10,000m Composite volcano to scale Layers of LavaLava Flow

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

9. The _________ Islands are a volcanic group of islands 600 miles off the coast of Ecuador on the equator. In the last 200 years, a remarkable 50 plus eruptions have occurred, some threatening the unique flora and fauna, some creating new land. Galapagos

10.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools Ash and Cinder Cone Paricutin - Mexico Layers of Ash and Cinder Volcanic Bombs Pipe The volcano is built up of layers of ASH. When it erupts it is normally with great explosive force. 3,000m

11. Watch its formation in 1943!!!!Watch its formation in 1943!!!! 0:43

12. Lava flowing underground created this _____ _____, large enough to walk through. lavatube

13. Volcanoes Review: Fast-moving clouds of gas, ash, and other tephra are called ____________ _ Large, rounded tephra are called __________. Iceland and Hawaii have ______ cones. A mushroom-shaped igneous intrusion is a ______________. laccolith pyroclastic flows volcanic bombs shield