Plate Tec Daily Two
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Transcript of Plate Tec Daily Two
Plate Tectonics Daily Two
Earth Science
McLane High School
Plate Tectonics Daily Two 12/1,2
Q. What are the three main parts of the geosphere?
A. Crust, Mantle, Core
Q. Why is the solid earth layered?
A. Density differences
Objective: Recall basic information about the solid earth
Plate Tectonics Daily Two 12/3,4Objective: Understand the evidence supporting continental drift
What is the lithosphere composed of?
Upper mantle + crust
How is the asthenosphere different from the lithosphere?
Squishy,
Higher density,
Hotter
Squishy
Crunchy
Plate Tectonics Daily Two 12/5,8
What types of evidence did Alfred Wegener use to support his Continental Drift hypothesis?
Puzzle Fit
Fossils
Mountain Ranges
Glaciers
What is the continental drift hypothesis?
The idea that the continents had once been joined to form a single supercontinent - Pangea
Objective: Understand the evidence supporting continental drift
Plate Tectonics Daily Two, 12/9,10Objective: Understand the historical perspective of the Continental Drift Hypothesis
Why did the scientists in the early 1900s reject Wegener’s Continental Drift Hypothesis?
What new evidence has been found to support Wegener’s ideas?
– Ocean Floor Magnetism
– Earthquake Data– Hot Spots– Ocean Drilling