9. Permian – 225 Million Years ago

10. Triassic – 200 Million Years ago

11. Jurassic – 135 Million Years ago

12. Cretaceous – 65 Million Years ago

13. Present Day

17. Provides evidence that poles have flipped overtime

18. Three types of plate boundary

20. Convergent Boundaries

21. Continent-Continent Collision

22. Continent-Oceanic Crust Collision

23. Subduction

24. Ocean-Ocean Plate Collision

25. Divergent Boundaries

26. Divergent Boundary

27. Transform Boundaries Above: View of the San Andreas transform fault

29. Volcanoes and Plate Tectonics…

32. Volcanism is mostly focused at plate margins Pacific Ring of Fire

33. Volcanoes are formed by:

34.  Separation at a divergent boundary that is filled in with magma.

35. What are Hotspot Volcanoes? The Hawaiian island chain are examples of hotspot volcanoes.

36. The tectonic plate moves over a fixed hotspot forming a chain of volcanoes. The volcanoes get younger from one end to the other.

45. Earthquakes and Plate Tectonics…

53. EARTHQUAKE WAVES Seismographs record earthquake waves Seismograms show: Amplitude of seismic waves (how much rock moves or vibrates)Amplitude of seismic waves (how much rock moves or vibrates) Distance to the epicenterDistance to the epicenter Earthquake directionEarthquake direction

58. EARTHQUAKE MAGNITUDE measures the size of seismic waves  the energy released by the earthquake measures the size of seismic waves  the energy released by the earthquake Richter scale=measurement of energy released based upon wave amplitude (size of vibration) What you need: Amplitude (size of vibration = wave height)Amplitude (size of vibration = wave height) Time between arrival of 1 st P and 1 st S wavesTime between arrival of 1 st P and 1 st S waves

59. P & S (body waves) move through earth & arrive first P & S waves used to calculate magnitude of earthquake Amplitude = height of wave (how much the rock moves; size of vibration)

60. MERCALLI VS. RICHTER