Oceanic Crust Objectives: 1.To be able to define what oceanic crust is; 2.To be able to explain how oceanic crust forms; 3.To be able to describe the composition.
Tectonic Plates and Their Motions How did the idea of continental drift lead to plate tectonics? How do we know that plates move apart at divergent plate.
Plate Tectonics
Title: 17.2 Seafloor Spreading Page #: 88 Date: 3/18/2012.
(Chapter 10 in D & R) Geometry and Kinematics: Plates.
17-2 Seafloor Spreading Objectives Summarize the evidence that led to the discovery of seafloor spreading Explain the significance of magnetic patterns.
