Plate Techtonics

• Continental drift: continents had move.
• Pangaea: “All lands”
• Panthalassa: “All seas”
• Mid-Atlantic Ridge: Undersea mountain range with a steep narrow valley running down its center.
• Plate tectonics, “construction” The study of the formation of features in the earths crust.
• Asthenosphere: A layer of plastic rock
• Rift Valley:A portion of the earths crust.
• Subduction Zone: A deep ocean trench generally forms along a subduction zone.
• Transform Boundary: forms where two plates are grinding past each other.
• Terranes: Pieces of lithosphere.