Tectonic Activity  Volcanoes Cone Volcanoes Shield Volcanoes Composite Volcanoes Human effect of Volcanoes

Tectonic Activity Volcanoes Cone Volcanoes Shield Volcanoes Composite Volcanoes Human effect of Volcanoes PowerPoint PPT Presentation


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Volcanoes are formed along two types of plate boundary: destructive and constructive.Volcanoes occur where molten rock (magma) comes to the surface of the earth. The magma rises to the surface through cracks in the crust called vents. . Cone VolcanoesWhen lava is thick and acidic it doesn't flow far before cooling and solidifying, this causes cone volcanoes (aka acid cone volcanoes) to have steep sides.Example: Mount Pelee on Martinique (an island in the Caribbean) .

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Tectonic Activity Volcanoes Cone Volcanoes Shield Volcanoes Composite Volcanoes Human effect of Volcanoes

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1. Tectonic Activity Volcanoes Cone Volcanoes Shield Volcanoes Composite Volcanoes Human effect of Volcanoes

2. Volcanoes are formed along two types of plate boundary: destructive and constructive.   Volcanoes occur where molten rock (magma) comes to the surface of the earth. The magma rises to the surface through cracks in the crust called vents.

3. Cone Volcanoes   When lava is thick and acidic it doesn’t flow far before cooling and solidifying, this causes cone volcanoes (aka acid cone volcanoes) to have steep sides.     Example: Mount Pelee on Martinique (an island in the Caribbean)

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