1 / 17

Monday, Sept 29, 2008

Monday, Sept 29, 2008. EQ: What Forces Affect the Earth? Journal: What evidence do we have the Pangea once existed? Agenda Return Quizes/Discuss Plate Tectonics Intro Plate Tectonics guided reading/notes Simon Says Review. Continental drift. Alfred Wegner.

fran
Download Presentation

Monday, Sept 29, 2008

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. Monday, Sept 29, 2008 • EQ: What Forces Affect the Earth? • Journal: What evidence do we have the Pangea once existed? • Agenda • Return Quizes/Discuss • Plate Tectonics Intro • Plate Tectonics guided reading/notes • Simon Says Review

  2. Continental drift

  3. Alfred Wegner suggested that a supercontinent he called Pangaea had existed in the past, broke up starting 200 million years ago, and that the pieces ``drifted'' to their present positions

  4. Wegners supporting evidence the fit of the continents the distribution of fossils a similar sequence of rocks at numerous locations ancient climates the apparent wandering of the Earth's polar regions

  5. What is the Lithosphere? The crust and part of the upper mantle = lithosphere Less dense than the material below it so it “floats”

  6. What is the Asthenosphere? The plastic layer below the lithosphere = asthenosphere The plates of the lithosphere float on the asthenosphere

  7. Platetectonics The theory states that Earth's outermost layer, the lithosphere, is broken into 7 large, rigid pieces called plates.

  8. 2 Types of Plates Ocean plates - plates below the oceans Continental plates - plates below the continents

  9. Divergent Boundaries Boundary between two plates that are moving apart or rifting  

  10. Convergent Boundaries Boundaries between two plates that are colliding  

  11. Tuesday, Sept 30, 2008 • EQ: What Forces Affect the Earth • Journal: Name two types of plate boundaries and draw arrows representing how they move. • Test on Friday-Plate Tectonics and Earth’s Structure

  12. Tuesday, Sept 30, 2008 • EQ: What Forces Affect the Earth • Homework-Finish Notes Worksheet (both sides) • Agenda • Discuss Journal Entry • Convection Current Model • Sea Floor Spreading • Finish Notes Worksheet • TOTD-How do convection currents relate to plate tectonics

  13. Tuesday, Sept 30, 2008 • EQ: What Forces Affect the Earth Convection Currents • Go to one of each convection stations and draw what you see. • Describe what is happening • Where do you see “rising” and “sinking”?

  14. WednesdayOctober 1, 2008 • EQ: What Forces Affect the Earth? • Journal-Explain the theory of Seafloor Spreading? • Test on Friday

  15. WednesdayOctober 1, 2008 • EQ: What Forces Affect the Earth? • Agenda • Discuss Journal Entry • Plate Boundaries Activity • Fault Notes and Demo • Go Over Homework from Yesterday • Study Guide

More Related