Plate Tectonics.

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Presentation transcript:

Plate Tectonics

Why do plates move? The heated, liquid mantle allows the pieces (plates) on the crust to move around slowly.

Plates When the boundary of two plates meet, it is called a fault. Earthquakes and volcanoes occur at faults.

Convergent Boundaries Two plates come together This movement produces mountains & volcanoes Appalachian Mountains Rocky Mountains

Divergent Boundaries Two plates move apart (divide) This movement allows magma to seep up from the mantle, they are responsible for volcanoes Mt. McKinley Mt. Kilauea

Transform Boundaries Two plates slide past one another This movement creates earthquakes Along the San Andreas Fault