IGCSE Geography: Natural Environments: Plate Tectonics

Loading...

Flash Player 9 (or above) is needed to view presentations.
We have detected that you do not have it on your computer. To install it, go here.

0 comments

Post a comment

    Post a comment
    Embed Video
    Edit your comment Cancel

    9 Favorites & 1 Group

    IGCSE Geography: Natural Environments: Plate Tectonics - Presentation Transcript

    1. Plate Tectonics
    2. Global Distribution of Volcanoes
    3. Global Distribution of Earthquakes
    4. Tectonic Plates > Plate Boundaries
    5. If we can provide proof that Pangaea existed – what else can we prove?
    6. The Future ...
    7. What is the evidence that Pangaea existed? 1. Geological Evidence 2. Biological Evidence 3. Climate Evidence
    8. 1. Geological Evidence
    9. Fit of South America and Africa
    10. The continents of South America and Africa look like they should fit together like a jig- saw puzzle. There are patterns in the structure of the mountains in North East USA and North West Europe that would suggest they should join together.
    11. 2. Biological Evidence
    12. Could Mesosaurus have swum from South America to Africa? Researchers say no.
    13. The fossils of Mesosaurus has been found in both South America and Africa. Looking at the skeleton of Mesosaurus tells us that it could not have swam from one continent to the other therefore the continents, at one time, must have been closer.
    14. 3. Climate Evidence
    15. Coal Think about the climate in which coal forming vegetation grows.
    16. Limestone > Coral
    17. Limestone is found France and the UK > Must have been located in a warmer region of the world.
    18. So what are the mechanisms that makes this happen? Sea Floor Spreading
    19. Plates are like rafts ‘floating’ onto top of the mantle.
    20. We know about the structure of the earth from the study of the behavior of waves as they pass through the earth.
    21. Exploring the Ocean Floor
    22. Ranges of submarine mountains in the middle of the Atlantic.
    23. The crust gets older with distance from the Mid-Oceanic Ridge. There are strips of crust that show alternating polarity.
    24. Convection currents.
    25. Convection currents in the mantle.

    + Richard AllawayRichard Allaway, 2 years ago

    custom

    5227 views, 9 favs, 4 embeds more stats

    http://www.geographyalltheway.com/igcse_geography/n more

    More info about this document

    CC Attribution License

    Go to text version

    • Total Views 5227
      • 4011 on SlideShare
      • 1216 from embeds
    • Comments 0
    • Favorites 9
    • Downloads 0
    Most viewed embeds
    • 1198 views on http://www.geographyalltheway.com
    • 14 views on http://liversidgeib.wikispaces.com
    • 3 views on http://geography.isswiki.de
    • 1 views on http://www.otakicollege.knowledge.net.nz

    more

    All embeds
    • 1198 views on http://www.geographyalltheway.com
    • 14 views on http://liversidgeib.wikispaces.com
    • 3 views on http://geography.isswiki.de
    • 1 views on http://www.otakicollege.knowledge.net.nz

    less

    Flagged as inappropriate Flag as inappropriate
    Flag as inappropriate

    Select your reason for flagging this presentation as inappropriate. If needed, use the feedback form to let us know more details.

    Cancel
    File a copyright complaint
    Having problems? Go to our helpdesk?

    Categories

    Groups / Events