1. Topography of Pennsylvania

2. 5 major regions of PA

3. Atlantic Coastal Plain Region

5. Narrow Flat strip Along the Delaware River

6. Atlantic Coastal Plain Region

7. Piedmont Region

11. Low Rolling hills Broad valleys

12. Piedmont Region (York County)

14. Ridge and Valley Region

16. Long mountain ranges Narrow valleys

17. Ridge and Valley Region

18. Appalachian Plateau Region

19. Allegheny/Appalachian Plateau Region Mountains, hills, valleys and streams Largest area of the state Originally a plateau, but due to extreme erosion, does not appear to be a plateau

20. Allegheny/Appalachian Plateau Region

21. Erie Plain Region

22. Narrow strip of land a few miles inland from Lake Erie.

23. Erie Plain Region