1. Monday, Sept 29, 2008 EQ: What Forces Affect the Earth?
Journal: What evidence do we have the Pangea once existed?
Agenda
Return Quizes/Discuss
Plate Tectonics Intro
Plate Tectonics guided reading/notes
Simon Says Review

2. Continental drift

3. Alfred Wegner
suggested that a supercontinent he called Pangaea had existed in the past, broke up starting 200 million years ago, and that the pieces ``drifted'' to their present positions

4. Wegners supporting evidence
the fit of the continents
the distribution of fossils
a similar sequence of rocks at numerous locations
ancient climates
the apparent wandering of the Earth's polar regions

5. What is the Lithosphere?
The crust and part of the upper mantle = lithosphere
Less dense than the material below it so it “floats”

6. What is the Asthenosphere?
The plastic layer below the lithosphere = asthenosphere
The plates of the lithosphere float on the asthenosphere

7. Platetectonics
The theory states that Earth's outermost layer, the lithosphere, is broken into 7 large, rigid pieces called plates.

8. 2 Types of Plates
Ocean plates - plates below the oceans
Continental plates - plates below the continents

9. Divergent Boundaries
Boundary between two plates that are moving apart or rifting
 

10. Convergent Boundaries
Boundaries between two plates that are colliding
 

11. Tuesday, Sept 30, 2008 EQ: What Forces Affect the Earth
Journal: Name two types of plate boundaries and draw arrows representing how they move.
Test on Friday-Plate Tectonics and Earth’s Structure

12. Tuesday, Sept 30, 2008 EQ: What Forces Affect the Earth
Homework-Finish Notes Worksheet (both sides)
Agenda
Discuss Journal Entry
Convection Current Model
Sea Floor Spreading
Finish Notes Worksheet
TOTD-How do convection currents relate to plate tectonics

13. Tuesday, Sept 30, 2008 EQ: What Forces Affect the Earth
Convection Currents
Go to one of each convection stations and draw what you see.
Describe what is happening
Where do you see “rising” and “sinking”?

14. Wednesday October 1, 2008 EQ: What Forces Affect the Earth?
Journal-Explain the theory of Seafloor Spreading?
Test on Friday

15. Wednesday October 1, 2008 EQ: What Forces Affect the Earth? Agenda
Discuss Journal Entry
Plate Boundaries Activity
Fault Notes and Demo
Go Over Homework from Yesterday
Study Guide