Plate Boundaries

The gradual movement of the continents across the earth. In 1912, Alfred Wegener introduced this theory but he did not fully understand what caused the plates to move.

• sea floor spreading

• Continental Drift Theory

• Uplift

• Divergent boundaries

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

New ocean crust is formed at ocean ridges and destroyed at deep-sea trenches.

• Convergent Boundaries

• Divergent Boundaries

• Sea Floor Spreading

• Transform Boundaries

Tags

NGSS.MS-ESS2-3

New crust is created as two or more plates pull away from each other.

• Convergent boundaries

• Divergent Boundaries

• Sea Floor Spreading

• Transform Boundaries

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Plates converging (coming) together.

• Convergent boundaries

• Transform boundaries

• Divergent boundaries

• Sea Floor Spreading

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The point where one plate dives beneath another plate. Destroys crust.

• convection currents

• Uplift

• Subduction Zone

• Ring of fire

Tags

NGSS.MS-ESS2-2

Where two plates are sliding horizontally past one another. No destruction or construction - Crust is deformed or fractured (earthquakes). Example - San Andreas fault

• Convergent Boundary

• Divergent Boundary

• Transform Boundary

• Ring of Fire

Tags

NGSS.MS-ESS2-2

A zone of frequent earthquakes and volcanic eruptions that encircle the basin of the Pacific Ocean.

• Mid-Atlantic Ridge

• Ring of Fire

• San Andreas Fault

• Mt Helena

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

Made mostly of basalt - Thinner and More Dense.

• oceanic crust

• continental crust

• volcanic crust

• sedimentary crust

Made mostly of granite - Thicker and Less Dense.

• oceanic crust

• continental crust

• volcanic crust

• sedimentary crust

The rising of regions of the crust to higher elevations

• Ring of fire

• uplift

• subduction zone

• rift zone

Tags

NGSS.MS-ESS2-2