1. Internal Forces that Shape the Earth (Plate Actions)

2. Plate tectonics
The movement of tectonic plates upon the Earth

3. Ring of Fire

4. Tsunami

5. Hot Spot

6. Convergent Boundaries
What occurs? Plates collide

7. Subduction
One plate slides beneath another

8. Where: two ocean plates
Trench and island chain
TRENCH

9. Where: continental &ocean plates Landform: Trench and Mountains
-trench created by
subduction

10. Boundary: Two land plates collide Landform Created: Mountains

11. Divergent Boundary
What Occurs? plates separate / spread apart

12. Where Occurs? Two ocean plates separate
Landform = Mid ocean ridge

13. Where Occurs? Two land plates separate
Landform = Rift Valley

14. Transform Boundary
Where? Two plates slide against each other

15. Landform: Fault

16. IV. Earthquakes and volcanoes form along plate boundaries

17. External Forces that Shape the Earth

18. Weathering
The breaking down of rock into sediment

19. Mechanical Weathering
Physical actions that creates sediment

20. Root Action

21. Frost Wedging

23. Chemical weathering
Chemical process that creates sediment

24. Carbonic Acid
a. Water + Carbon dissolves limestone

25. b. Creates caves

26. Acid Rain

27. Erosion
The carrying away
of sediment

28. Wind

29. Loess
Deposits of fine, windblown sediment

30. Water is the greatest agent of erosion

31. Ice (glaciers)

32. Glaciers form U-Shaped valleys

33. Moraines – ridges of rock and debris deposited by a glacier

34. Soil Creation Loess (soil composed of inorganic matter)
Humus (soil composed of organic matter)