Forces that Shape the Earth

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Presentation transcript:

Forces that Shape the Earth Earthquake risk and the landforms that we see in all parts of Canada are a result of a number of natural processes Some build the land up, others wear it down Time is also something to consider; these processes take a very long time to happen

Plate Tectonics Theory of plate tectonics The crust of the earth is floating on molten rock inside earth It is not a single piece but a puzzle like collection of plates (7 major one, 8 secondary and 60 minor) Think of what happens when you crack a hard-boiled egg- the cracks are the borders of the plates

Plate Tectonics The earth is shaped by plate movement Colliding plates Separating plates Volcanoes within plate borders Types of plate movement- page 37, 38 and 39

Divergent

Convergent I

Convergent II

Transform