Plate Tectonics - earth

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Convergent – plates move toward one another

Divergent – plates move away from each other

Transform – plate moves sideways from each other

Slide 51

Plate Boundaries

Slide 52

Plate Boundaries

Slide 53

Convergent Plates

Slide 54

Convergent Plates

Slide 55

Convergent Plates

Slide 56

Convergent Plates

The only subduction zone

in the Atlantic

Slide 57

Convergent Plates

Black arrows show subduction zones and

the direction of plate movement

Slide 58

Convergent Plates

Looking at the depth

of earthquakes shows

that angle that the

plate is being subducted

Slide 59

Divergent Plates

Slide 60

Divergent Plates

Slide 61

Divergent Plates

Slide 62

Divergent Plates

Slide 63

Transform Plates

Slide 64

Transform Plates

San Andreas

Fault

Slide 65

Mid-Plate Hotspots

Slide 66

Mid-Plate Hotspots

Slide 67

Mid-Plate Hotspots

Slide 68

Mid-Plate Hotspots

Slide 69

Why do the Plates Move?

Slide 70

Why do the Plates Move?

No single idea explains everything but we can identify several forces that contribute to the movement of the plates.