1 / 26

Volcanoes and Plate Tectonics (pages 200–203) Volcanoes and Plate Boundaries

Volcanoes and Plate Tectonics (pages 200–203) Volcanoes and Plate Boundaries. Key Concept: Volcanic belts form along the boundaries of Earth’s plates. Objective 1: Students will be able to… Identify where Earth’s volcanic regions are located and explain why they are found in these areas.

owen-ramsey
Download Presentation

Volcanoes and Plate Tectonics (pages 200–203) Volcanoes and Plate Boundaries

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 and Plate Tectonics (pages 200–203)Volcanoes and Plate Boundaries

  2. Key Concept: Volcanic belts form along the boundaries of Earth’s plates.

  3. Objective 1: Students will be able to… Identify where Earth’s volcanic regions are located and explain why they are found in these areas.

  4. A volcano is a weak spot in the crust where melted material comes to the surface. The melted material is called magma. Magma rises to the surface because it is less dense than solid rock.

  5. Most volcanoes happen at plate boundaries. Remember, plate boundaries are where two plates pull apart or push together.

  6. Where plates pull apart, magma rises and pours out of cracks in the crust.

  7. Where plates push together, the denser plate sinks into the mantle. Some of the sinking plate melts and forms magma. The magma rises and pours out of cracks.

  8. Once magma reaches the surface, it is called lava. As lava cools, it forms solid rock.

  9. Lava can build up to form mountains. When the mountains are on the ocean floor, islands form if the mountains poke above the water’s surface.

  10. Answer the following questions

  11. A weak spot in the crust where melted material comes to the surface is a(an). Volcano

  12. Melted material that comes to the surface in a volcano is called. magma

  13. Once melted material reaches the surface, it is called. lava

  14. When lava cools to a solid, it forms rock

  15. The diagram shows how some volcanoes form. Which plate, A or B, is turning into magma?

  16. Objective 1: Students will be able to… Identify where Earth’s volcanic regions are located and explain why they are found in these areas.

  17. HotSpotVolcanoes (page203)Objective 2: Students will be able to…Explain how hotspot volcanoes form.

  18. KeyConcept:A volcano forms above ahotspotwhenmagma erupts through the crust and reaches thesurface.

  19. Ahotspot is a place where material rises from deep inthe mantle.The material forms magma.

  20. Ifthemagmabreaksthroughthecrust,avolcanoforms.Hot spot volcanoes on the ocean floor can becomeislands.This how the Hawaiian Islands formed.

  21. Some hot spots are under the middle of plates,far fromplateboundaries.Forexample,thereisahotspotunderthe North American plate atYellowstone National Park inWyoming.

  22. Answer the following questions Boardwalk in Yellowstone National Park,

  23. Circle the letter of each sentence that is true about hot spots. a. Hot spots occur only at plate boundaries. b. Hot spots can cause volcanoes. c. Hot spots can cause islands to form.

  24. true or false? The Hawaiian Islands were formed by hot spot volcanoes. true

  25. HotSpotVolcanoes (page203)Objective 2: Students will be able to…Explain how hotspot volcanoes form.

  26. The End

More Related