Transcript Plate Tectonics: Continental Drift

Plate Tectonics:
Continental Drift
Chapter 5:
Composition versus Structure
 Crust
 Lithosphere
 Mantle
 Asthenosphere
 Core
 Mesosphere
 Outer Core
 Inner Core
Breakdown of the Earth
 Lithosphere = Crust and upper part of
mantle, solid
 Asthenosphere = Mantle, convection
currents, putty
 Outer core = core, liquid
 Inner core = core, solid
Foldable Earth Questions
 Challenge: What is the Diameter of the
earth?
 How do you solve this problem?
 Add
all the layers
 Inner core is just the radius
Inner core vs outer core
 How deep in the earth is the border
between the outer core and inner core?
 As we journey towards the center of the
Earth, what happens to the temperature
and pressure? Why?
Inner Core
 The temperature on the inner core is
6,000 degrees Celsius
 Why is the outer core liquid while the
inner core is solid?
Continental Drift
 Alfred Wegener
 Theory that continents can drift apart
and towards one another