1. Oceanic vs. Continental Crust
Venn Diagram

3. Oceanic Crust Continental Crust More dense Made of mostly BASALT
Types of crust
Made of rock
Solid
Make up tectonic plates
Part of lithosphere
Moving
More dense
Made of mostly BASALT
5-10km (3-6 miles) thick
Younger/newer
Less dense
Made of mostly GRANITE
30-50km (20-30 miles) thick
Older

4. Ch. 8 Goes along with foldable
Plate Boundaries
Ch. 8 Goes along with foldable

5. Convergent – “Colliding”
Lithospheric plates are moving towards each other.
FORMS:
Mountains
Trenches/Volcanic island arcs
Volcanoes on continents

6. Divergent – “Dividing”
Lithospheric plates are moving apart.
FORMS:
Rift valleys on land.
Mid ocean ridges under water.

7. Transform – “sliding”
Lithospheric plates are sliding horizontally past each other.
Causes earthquake activity
FORMS:
Faults

8. Plate Boundaries Chart
Fill in chart row by row

9. Plate Boundaries Chart
Type of Boundary
Sketch of Boundary
Direction of movement
Description/Features of Plate Boundary
Examples
Divergent Plate Boundary
Away from each other
Continental: rift valleys
Oceanic: sea floor spreading, rift valleys, mid-ocean ridges
(earthquakes)
Great Rift Valley in Africa
Mid-Atlantic Ridge
East Pacific Rise

10. Divergent Boundary

11. Great Rift Valley

12. Mid Atlantic Ridge

13. Mid-Atlantic Ridge

14. Plate Boundaries Chart
Type of Boundary
Sketch of Boundary
Direction of movement
Description/Features of Plate Boundary
Examples
Transform Plate Boundary
Sliding horizontally past each other
Earthquakes, fault lines
San Andreas Fault in California
North Anatolian Fault in Turkey

15. Transform Boundary

16. San Andreas Fault

17. North Anatolian Fault

18. Plate Boundaries Chart
Type of Boundary
Sketch of Boundary
Direction of movement
Description/
Features of Plate Boundary
Examples
Convergent Plate Boundary Collision
Continent - Continent
Moving towards each other
Mountains
(earthquakes)
Himalayan Mountains (still colliding)
Appalachian/Ural Mountains (formed from past collisions)

19. Convergent Boundaries

20. Himalayans

21. Appalachian Mountains

22. Plate Boundaries Chart
Type of Boundary
Sketch of Boundary
Direction of movement
Description/Features of Plate Boundary
Examples
Convergent Plate Boundary Subduction
Ocean-Ocean
Moving towards each other, one is subducting (sinking)
Trenches & volcanic island arcs (on overriding plate)
(earthquakes)
Mariana Trench & Islands

23. Ocean-Ocean

24. Mariana Trench/Islands

26. Plate Boundaries Chart
Type of Boundary
Sketch of Boundary
Direction of movement
Description/Features of Plate Boundary
Examples
Convergent Plate Boundary Subduction
Ocean-Continent
Ocean plate is subducting beneath continental plate
Volcanoes form on continent ,
Trenches in ocean
(earthquakes)
Peru-Chilean Trench
Andes Mountains

29. Peru-Chile

31. Notes page with 8 rectangles
How Plates Move
Notes page with 8 rectangles

32. Tectonic Plates Theory developed in late 1960’s
In Greek Plate Tectonics means “one who constructs”
The tectonic plates are pieces of lithosphere that move on top of the asthenosphere.

33. Divergent Boundary
This boundary is responsible for creating new rock on the ocean floor known as “sea floor spreading”
Molten material rises between the cracks of plates.

34. Convergent Boundary
Plates are only moving a few centimeters per year, so collisions are slow and last millions of years
Mount Everest is the tallest mountain (29,035 feet) created at convergent boundary.

35. Transform Boundary
Los Angeles and San Fransisco are moving towards each other at about 2 inches per year, in about 10 million years they will be side by side.

36. Ridge Push
As rock moves away from ridge it cools and slides downhill, which could help move rock away from ridge.

37. Slab Pull
The edge of a subducting plate is heavy and as it sinks into the mantle it pulls the rest of the crust down with it.

38. Convection Current AKA Mantle Convection
Convection current is a cycle of heating, cooling, sinking magma.
As magma heats (less dense), it moves up, pushing against earth’s plates causing them to move.
When it cools it sinks (more dense) is heated and repeats the process all over again.

39. Plate Tectonics