changing nature of earth mr. lin image courtesy of
TRANSCRIPT
![Page 1: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/1.jpg)
Changing Nature of Earth
Mr. Lin
Image Courtesy of http://www.spacetoday.org/images/SolSys/Earth/EarthBlueMarbleWestTerra.jpg
![Page 2: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/2.jpg)
Look at the World Map. It looks like a puzzle. Can anyone tell me why?
Image Courtesy of http://www.tlrp.org/international/images/world.gif
![Page 3: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/3.jpg)
Theory of Continental Drift
Image Courtesy of http://www3.bc.sympatico.ca/Moon/earths.gif
![Page 4: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/4.jpg)
Image Courtesy of http://geology.com/pangea-continental-drift.gif
![Page 5: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/5.jpg)
Theory of Continental Drift
Image Courtesy of http://www.noc.soton.ac.uk/gg/classroom@sea/carlsberg/images/plate_history_lge.jpg
![Page 6: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/6.jpg)
Theory of Continental Drift
• A Theory that all the continents on Earth were originally a part of one large super-continent called Pangaea.
• Plates on the Earth’s Crust have since moved parts of Pangaea away from each other.
Image Courtesy of http://upload.wikimedia.org/wikipedia/commons/6/65/Pangaea.png
PANGAEA
![Page 7: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/7.jpg)
How Do the Continents Move?
![Page 8: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/8.jpg)
Plate Tectonics
• The Earth’s surface (called the Crust) is cracked into large “plates”
• These plates float on the molten rock under the crust.
Image Courtesy of http://www.gsi.ie/NR/rdonlyres/A3B07F5E-D9BB-4026-908D-DEB9B0217EA6/0/earth_cut.jpg
![Page 9: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/9.jpg)
Plates
Image Courtesy of http://www.dkimages.com/discover/previews/1244/597340.JPG
![Page 10: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/10.jpg)
Plates
Image Courtesy of http://www.windows.ucar.edu/earth/images/earth_plates_usgs_L.jpg
![Page 11: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/11.jpg)
Plate Tectonics
Show Video on Plate Tectonics
![Page 12: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/12.jpg)
Plate Tectonics
• When Plates are next to each other, they can move in three main ways:
– Away from each other• Divergent
– Into each other• Convergent
– By sliding• Transformational
Image Courtesy of http://geothai.net/2008/images/stories/article_image/convergent-boundary-oceanic-continental-still.gif
![Page 13: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/13.jpg)
Convergent Plates
![Page 14: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/14.jpg)
Convergent PlatesMountains like Mt. Everest are built by Convergent Plates
![Page 15: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/15.jpg)
Divergent Plates
![Page 16: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/16.jpg)
Transformational
![Page 17: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/17.jpg)
MwwwaaahahahahAHAHA
H!!!So What Moves the Plates?
(Let’s first investigate the layers of the
EARTH)
![Page 18: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/18.jpg)
Layers of the Earth
• Crust: Solid rock
• Mantle: Melted rock
• Outer Core: Melted metal
• Inner Core: Solid Metal
Image Courtesy of http://www.mgm.monschau.de/seismic/images/artikel/abb10_gross.jpg
![Page 19: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/19.jpg)
Inner Core: 800 miles thick. Made of solid nickel and iron
Outer Core: 1,400 miles thick. Made of liquid nickel and iron
Mantle: 1,800 miles thick. Made of magma
Crust: 3-5 miles thick. Made of rocks
![Page 20: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/20.jpg)
Layers of the Earth
Image Courtesy of http://volcano.und.edu/vwdocs/vwlessons/lessons/Earths_layers/Earths_layers3.html
![Page 21: Changing Nature of Earth Mr. Lin Image Courtesy of](https://reader035.vdocuments.net/reader035/viewer/2022070410/56649f055503460f94c19c4b/html5/thumbnails/21.jpg)