1. Friday Starting Line
Directions: Log into Blackboard and select the starting line link. Answer the questions on the Google Form.
What was the name of the scientist who came up with the theory of sea-floor spreading?
What has happened to the poles over time?
The youngest rocks can be found where along the sea floor?
The oldest rocks can be found where along the sea floor?

2. Announcements Homework Check:
Test next week over Chapters 2, 10, and 11!

3. Earth and Space Science
Unit 4: Plate Tectonics and Mountains
Daily Objective:
I can describe the theory of plate tectonics and model it in a lab.

4. Notebook Notes
Directions: In your document, write the following information in this order on the LEFT SIDE.
(Your Name)
Mr. Swisher
Earth and Space Science _____ (Period)
11/4/2016

5. Notebook Notes
Directions: In your document, write the following information in this order in the CENTER in BOLD.
10.2 Plate Tectonics

6. Plate Tectonics
Plate Tectonics: Most recent and well-accepted hypothesis that explains how and why the continents on our Earth move.
This theory came from parts of the continental drift and sea floor spreading hypotheses.
It is also the study of the formation of the features of the Earth.

7. Tectonic Plates
The Earth’s crust and mantle form a layer called the lithosphere.
The lithosphere is broken into blocks called tectonic plates.
15 tectonic plates total
Made of oceanic crust (thin), continental crust (thick), or both
The layer below the lithosphere is called the asthenosphere.
It is made of very hot “plastic” rock that can move easily.
The Earth’s crust moves when the tectonic plates move on top of the asthenosphere.

8. Tectonic Plates

9. Plate Boundaries Plate boundaries are the edges of each plate.
Marked by mountain ranges or deep valleys
Some follow the lines of the continents
There are 3 types of plate boundaries:
Divergent
Convergent
Transform

10. Divergent Boundaries
Divergent Boundaries: Two plates move AWAY from each other
“Di” means 2

11. Divergent Boundaries There are 2 types of divergent boundaries:
Oceanic-Oceanic: 2 oceanic plates move away from each other; crust is created
Example/Creates: Mid-Ocean Ridge
Continental-Continental: 2 continental plates move away from each other; crust is created

12. Convergent Boundaries
Convergent Boundaries: Two plates move TOWARD each other

13. Convergent Boundaries
There are 3 types of convergent boundaries:
Oceanic-Oceanic: 2 oceanic plates move toward each other; older plate will sink; crust is destroyed
Example/Creates: Island Arcs, Trenches (valleys)
Continental-Continental: 2 continental plates move toward each other; neither plate sinks; crusts combine
Example/Creates: Mountain Ranges
Oceanic-Continental: 1 oceanic plate and 1 continental plate move toward each other; older plate will sink; crust is destroyed
Example/Creates: Volcanic Arcs, Trenches (valleys)

14. Transform Boundaries
Transform Boundaries: Two plates SLIDE PAST each other while moving in opposite directions.
Example/Creates: Fault Line (where earthquakes happen)

15. Plate Tectonics Activity

16. Plate Tectonics Video