Pt. 3. Lecture 25. Anatomy of an earthquake : Sumatra
Lecture 26. History of plate motions : where and why
Lecture 27. Assembling North America
Lecture 28. The Sun-driven hydrologic cycle
Lecture 29. Water on Earth : the Blue Planet
Lecture 30. Earth's atmosphere : air and weather
Lecture 31. Erosion : weathering and land removal
Lecture 32. Jungles and deserts : feast or famine
Lecture 33. Mass wasting : rocks fall downhill
Lecture 34. Streams : shaping the land
Lecture 35. Groundwater : the invisible reservoir
Lecture 36. Shorelines : factories of sedimentary rocks.
