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Volcanoes By: Zoey Matheny 3-11-2010.

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Presentation on theme: "Volcanoes By: Zoey Matheny 3-11-2010."— Presentation transcript:

1 Volcanoes By: Zoey Matheny

2 Shield Volcano Lava flows gradually building a wide, gentle sloping mountain! Shield volcanoes rising from hot spot on the ocean floor creating the Hawaiian Islands. Smoke Lava

3 Composite Layers of lava alternate with layers of ash, cinders, and bombs in a composite volcano. Composite volcanoes are tall, cone-shaped mountains in which layers of lava alternate with layers of ash. Composite volcano tubes Lava

4 Cinder Cone The thin, runny lava travels far before cooling solidifying. Central vent Cinder Cone Crater When cinders erupt explosive from volcano vent. they pile up around the vent, forming a cone-shaped hill called a Cinder Cone.

5 Caldera Enormous eruptions may empty the main vent and the magma chamber beneath a volcano. Water The hole is filled with pieces of the volcano that have fallen inward.

6 Hot Springs & Geysers Sometimes, rising hot water and steam becomes trapped underground in a narrow crack. Hot Spring forms when groundwater heated by a nearby body of magma rises to the surface and collects in a natural pool.

7 Lava plateaus: Bonus The thin runny lava travels far before cooling and solidifying. Harden lava Instead of forming mountains, some eruptions of lava form high, level areas.


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