1. Edible Plate Tectonics each student should have 1 Oreo cookie – DO NOT EAT THE COOKIE~! YOU ONLY GET ONE FOR THE LAB.
Special thanks to Dr. Bob Lillie of the Department of Geosciences who normally does this presentation as a guest lecture.

2. PLATE TECTONICS: Large features… continents ocean basins
mountain ranges
and processes…
earthquakes
volcanic eruptions
due to movement of plates of Earth’s outer shell.

3. PLATE TECTONICS:
THE THEORY THAT EXPLAINS HOW LARGE PIECES OF THE EARTH’S OUTERMOST LAYER, CALLED THE TECTONIC PLATES, MOVE AND CHANGE SHAPE.

4. What causes the motion of tectonic plates?
Remember that solid rock of the asthenosphere flows very slowly. This movement occurs becvause of changes in density within the astehenosphere.
These density changes are caused by the outward flow of thermal energy from deep with the earth.
When rock is heated, it expands, becomes less dense, and tends to rise to the surface of the earth.
As the rock gets near the surface, the rock cools, becomes more dense and tends to sing.

5. Chapter F4 Section 3 The Theory of Plate Tectonics
file:///F:/F4/80087.html
Chapter F4

6. Parks and Plates
©2002 Robert J. Lillie

15. Create a 6 section foldable in your comp book (like we have done before).
Divergent Boundaries Convergent Transform
Write in top box write write
What divergent
Boundaries are.
In the bottom box draw/ write what draw / write what
Draw a picture of your
Oreo cookie and what you learned you learned
You learned

16. Divergent BoundaRIES file:///F:/F4/80092.html Parks and Plates
©2002 Robert J. Lillie

17. DIVERGENT PLATES
IT IS THE BOUNDARY BETWEEN TWO TECTONIC PLATES THAT ARE MOVING AWAY FROM EACH OTHER.
NEW SEA FLOOR FORMS AT DIVERGENT BOUNDARIES.
MID-OCEAN RIDGES ARE THE MOST COMMON TYPE OF DIVERGENT BOUNDARY.

18. DIVERGENT Plate Boundary: Seafloor Spreading

19. DIVERGENT Plate Boundary: Seafloor Spreading

20. DIVERGENT Plate Boundary: Seafloor Spreading

22. Seafloor Spreading & Plate Tectonics
New ocean basins form from volcanism
Ocean floor forms IN BETWEEN pieces that have split
SEAFLOOR SPREADING

23. Convergent Boundaries
file:///F:/F4/80090.html
Convergent Boundaries

24. Convergent PLATES
IT IS THE BOUNDARY FORMED BY THE COLLISION OF TWO LITHOSPHERIC PLATES
There are 3 types of convergent boundaries:
CONTINENTAL-CONTINENTAL / CONTINENTAL-OCEANIC /
OCEANIC-OCEANIC

25. CONVERGENT Plate Boundary

26. Coastal Mountain Range Composite Volcanoes
Sediment and Basalt Scraped off Subducting Plate
Plate Sweats

28. Transform Boundaries
Parks and Plates
©2002 Robert J. Lillie

29. TRANSFORM BOUNDARIES THE BOUNDARY BETWEEN TECTONIC PLATES THAT ARE SLIDING PAST EACH OTHER HORIZONTALLY

32. North American Plate
Pacific Plate

33. Pacific Plate North American Plate 2 inches/year x 100 years
= 17 feet!
North American Plate
Pacific Plate

35. Hot Spot
Parks and Plates
©2002 Robert J. Lillie

37.  14,000 feet
Mauna Kea
 14,000 feet
Mauna Loa

38. TALLER THAN MOUNT EVEREST!
18,000 ft below sea level
14,000 feet above sea level

39. Divergent Plate Boundary: Seafloor Spreading
Parks and Plates
©2002 Robert J. Lillie

40. Convergent Plate Boundary: Subduction
Parks and Plates
©2002 Robert J. Lillie
Convergent Plate Boundary:
Subduction

41. Transform Plate Boundary:
Transform (Strike-Slip) Faulting
Parks and Plates
©2002 Robert J. Lillie

42. Hot Spot:
Plate Interior
Parks and Plates
©2002 Robert J. Lillie

44. Plate Tectonics