Earth Shakes, Rattles, and Rolls

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Presentation transcript:

Earth Shakes, Rattles, and Rolls Mountain Building

Layers of the Earth Crust Mantle Outer core Inner core

Convection currents in the magma move the earth’s crust.

VOLCANIC MOUNTAIN NAMIBIA IN AFRICA

Volcanic mountains Formed when molten rock, or magma deep within the earth, erupts, and piles upon the surface Made of basalt and rhyolite. Takes place where two of the earth's tectonic plates collide.

Types of Volcanos Composite Cinder Cone Shield

Vesuvius, Krakatoa, Fujiyama, and Mount St. Helens tens of miles across and ten thousand or more feet in height. have small craters in their summits http://images.google.com/imgres?imgurl=http://www.cotf.edu/ete/images/modules/volcanoes/typesb.GIF&imgrefurl=http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html&h=236&w=265&sz=14&tbnid=qZF0vXnHnOkJ:&tbnh=96&tbnw=107&start=19&prev=/images%3Fq%3Dcomposite%2Bvolcano%26hl%3Den%26lr%3D%26sa%3DN

Composite Mount Baker (US) is a typical composite volcano, with steep sides and a pointed summit.

steep sides and usually have a small crater on top consist almost entirely of loose, grainy cinders and almost no lava small volcanoes steep sides and usually have a small crater on top http://images.google.com/imgres?imgurl=http://www.cotf.edu/ete/images/modules/volcanoes/typesb.GIF&imgrefurl=http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html&h=236&w=265&sz=14&tbnid=qZF0vXnHnOkJ:&tbnh=96&tbnw=107&start=19&prev=/images%3Fq%3Dcomposite%2Bvolcano%26hl%3Den%26lr%3D%26sa%3DN

Cinder cone Eve cone is a young, well preserved cinder cone at Mount Edziza, British Columbia.

hundreds of miles across and many tens of thousands of feet high. Mauna Loa consist almost entirely of frozen lavas large craters at their summits. http://images.google.com/imgres?imgurl=http://www.cotf.edu/ete/images/modules/volcanoes/typesb.GIF&imgrefurl=http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1.html&h=236&w=265&sz=14&tbnid=qZF0vXnHnOkJ:&tbnh=96&tbnw=107&start=19&prev=/images%3Fq%3Dcomposite%2Bvolcano%26hl%3Den%26lr%3D%26sa%3DN

Shield volcanoes The Illgachuz Range in western British Columbia is a shield volcano several million years old.