1 / 10

Volcanoes

Volcanoes. Volcanoes. Volcanoes. What is a volcanoe ? Weak spot in the crust where magma comes to the surface. When Magma reaches the surface it’s called lava. Volcanoes and Plate boundaries. 600 active volcanoes on land More beneath sea Form along the boundaries of

jerrod
Download Presentation

Volcanoes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Volcanoes

  2. Volcanoes

  3. Volcanoes • What is a volcanoe? • Weak spot in the crust where magma comes to the surface. • When Magma reaches the surface it’s called lava

  4. Volcanoes and Plate boundaries 600 active volcanoes on land More beneath sea Form along the boundaries of Earth’s plates. Both convergent and divergent plate boundaries

  5. Volcanoes and Plate boundaries Volcanoes often form where two oceanic plates collide or where an oceanic plate collides with a continental plate. In both situations, an oceanic plate sinks through a trench. Rock above the plate melts to form magma, which then erupts to the surface as lava.

  6. Ring of Fire

  7. Ring of Fire Formed by volcanoes that rim the Pacific Ocean Contains nearly 75% of the world’s active volcanoes

  8. Ring of Fire

  9. Hot Spot Volcanoes A volcano forms above a hot spot when magma erupts through the crust and reaches the surface

  10. Hot Spot Volcanoes • Hawaiian islands formed one by one over millions of years as the Pacific plate drifted over a hot spot. • Yellowstone National Park in Wyoming marks a hot spot under the North American plate.

More Related