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# Elective Geography Secondary 3 Express (New)- Plate Tectonics Week 3

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### Elective Geography Secondary 3 Express (New)- Plate Tectonics Week 3

1. 1. + Elective Geog (New) Secondary 3 E Week 3: Living with Tectonic Hazards armanalluwie.blogspot.com
2. 2. + 2 Lesson Outcomes  Students would be able to  Describe the internal structure of the Earth (core, mantle, crust) and tectonic plates.  Explain the movement of plates.armanalluwie.blogspot.com
4. 4. + 4  Compare your drawing with the one on page 6.  Have you seen this picture before?  Did you use any of the terms used in your textbook?  Draw a diagram showing the internal structure of the earth. Annotate the diagram using the terms listed below.armanalluwie.blogspot.com
5. 5. + 5 Take note of the command words used!  Draw  Make a sketch of a geographical form  Include labels to the diagram  Question may be written as ‘Using a diagram’ or ‘Illustrate with a sketch’  Annotate  Add notes of explanation  Label with short comments a diagram, map or photograph to describe or explain  If asked ‘Using only an annotated diagram…’ only the diagram and attached notes will be marked  Insert/Label  Place specific names or details to an illustrative techniquearmanalluwie.blogspot.com
6. 6. + 6 Internal Structure of the Earth: Core  Inner core- Solid  Pressure exerted on it by surrounding layers  1,200 km thick  Outer Core- Liquid  2,100 km thickarmanalluwie.blogspot.com
7. 7. + 7 Internal Structure of the Earth: Mantle  Solid rock that flows under high temperature and pressure  Layer of solid rock and the asthenosphere  In the Asthenosphere, high temperatures and pressure bring the rocks close enough to their melting point for them to be easily deformed Solid rock that flows?armanalluwie.blogspot.com
8. 8. 8armanalluwie.blogspot.com
9. 9. + 9 Internal Structure of the Earth: Crust  Hard shell made up of thick slabs or rocks that are constantly moving  Plates  Oceanic Crust: crust beneath oceans  Continental Crust: crust beneath continents  Crust + Uppermost mantle = Lithosphere  Lithosphere melts, hot molten rock known as magma is formedarmanalluwie.blogspot.com
10. 10. 10armanalluwie.blogspot.com http://pubs.usgs.gov/gip/dynamic/historical.html
11. 11. 11armanalluwie.blogspot.com