Four Systems of Our Earth: Plate Tectonics Theory Explained

The Geosphere – solid Earth ,[object Object],[object Object]

Earth has 4 layers ,[object Object],[object Object],[object Object],[object Object],[object Object]

Why/ How is the geosphere in constant motion?

Plate boundaries are edges where plates meet.

The Science of Geology ,[object Object],[object Object]

Geology – the study of planet Earth ,[object Object],[object Object],[object Object],[object Object],[object Object]

A Journey to the Center of the Earth – ,[object Object],[object Object]

[object Object],[object Object],[object Object]

Evidence for Continental Drift ,[object Object],[object Object]

Continental Drift ,[object Object],[object Object],[object Object]

Drifting Continents Chapter 9, Section 3 Pages 326 – 330

Evidence for Continental Drift ,[object Object],[object Object],[object Object]

Scientists Reject Hypothesis ,[object Object],[object Object],[object Object]

The answer to “WHY” ,[object Object]

Convection Currents and the Mantle

Methods of Heat Transfer ,[object Object],[object Object],http:// www.solarviews.com/eng/edu/convect.htm

Convection in the Earth’s Mantle ,[object Object]

The Theory of Sea-Floor Spreading ,[object Object],[object Object],[object Object]

The theory of sea floor spreading ,[object Object],[object Object]

[object Object],[object Object]

Evidence (continued) ,[object Object]

Subduction at Deep— Ocean Trenches ,[object Object]

Subduction at Deep— Ocean Trenches (cont.) ,[object Object],[object Object],[object Object],

TYPES OF PLATE MOVEMENT ,[object Object],[object Object],[object Object],[object Object],[object Object]

Divergent Plate Movement ,[object Object],[object Object],[object Object]

Convergent Plate Movement : ,[object Object]

Lateral Slipping Plate Movement ,[object Object],[object Object],[object Object]

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