1 / 31

Earth Shakes, Rattles, and Rolls

Earth Shakes, Rattles, and Rolls. Plate Tectonics Volcanoes Earthquakes. What is the relationship between the earth’s plates, volcanoes, and earthquakes?. Plates. http://www.extremescience.com/PlateTectonicsmap.htm. Earthquakes. Volcanoes. http://hsv.com/scitech/earthsci/quake.htm.

honorato-berger
Télécharger la présentation

Earth Shakes, Rattles, and Rolls

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. Earth Shakes, Rattles, and Rolls Plate Tectonics Volcanoes Earthquakes

  2. What is the relationship between the earth’s plates, volcanoes, and earthquakes?

  3. Plates http://www.extremescience.com/PlateTectonicsmap.htm

  4. Earthquakes

  5. Volcanoes http://hsv.com/scitech/earthsci/quake.htm

  6. Let’s look at those maps again.

  7. Plates Volcanoes Earthquakes

  8. Earthquakes and Volcanoes are found where plates meet.

  9. Evidence Wegener used to support theory of continental drift: • Continents fit like a puzzle • Fossil evidence • Rocks were similar in Africa and South America • Evidence Antarctica once had a tropical climate

  10. How did geologists explain how the earth’s plates moved? Continental Drift Mid-Atlantic Ridge allows mantle to seep to surface through cracks and pushes plates of the earth apart.

  11. To see how geologists believe the plates moved go to the site below. Notice the Atlantic Ocean seafloor spreading. Seafloor spreading animation

  12. Layers of the Earth • Crust • Mantle • Outer core • Inner core

  13. VOLCANIC MOUNTAIN NAMIBIA IN AFRICA

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

  15. Convection currents in the Earth's mantle are what drive plate motions. Convection currents are driven by the simple fact that hot things (such as gases and liquids) rise while cool things fall.

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

  17. epicenter The point on the surface of Earth that is right above the focus of an earthquake http://www.harcourtschool.com/glossary/science/define/gr4/epicenter4c.html

  18. http://uc.wisc.edu/news/features/quake/pwaves.html

  19. Earthquakes How do we measure the intensity of an earthquake?

  20. Seismographmeasures Magnitude or the strength of an earthquake

  21. Seismograph records energy waves of the earth

  22. Richter Scale Earthquake Magnitudes Effects Less than 3.5Generally not felt 3.5-5.4Rarely causes damage. Under 6.0 Slight damage to well-designed buildings. 6.1-6.9 Destructive to about 100 kilometers across 7.0-7.9 Major earthquake. Serious damage over larger areas. 8 or greater Great earthquake.

  23. Richter Magnitude Number of Earthquakes per year 1.0 to 3.9 900,000 + 4.0-4.9 6200 5.0-5.9 800 6.0-6.9 226 7.0-7.9 18 8.0-8.9 Less than 2

  24. San Francisco Earthquake 1906

  25. Earthquakes in the ocean cause Tsunamis

  26. Tsunamis 30’ Wall of Water Destruction

  27. Types of Volcanos • Composite • Cinder Cone • Shield

  28. 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

  29. 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

  30. 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

  31. largest single mountain in the world • 30,000 +feet above the ocean floor • 100 miles across at its base.

More Related