1. Restless Earth By Benji Johnson, Ben Joy, Callum Barber and Philip Carr

2. Structure Of the Earth Made up of distinct layers, like onion The solid crust has relatively low density, sits and moves on top of mantle. The crust is thin compared to the diameter of the planet. The crust is made up of sections called plates, which vary in size. Continental crust is much thicker than oceanic, but is less dense.

3. Plate Tectonics

4. Plate Boundaries

5. Constructive Boundaries

6. Conservative Boundaries

7. Destructive Boundaries

8. Collision Boundaries

9. Volcanoes and Earthquakes

10. Examples of Volcanoes and Earthquakes Kashmir Loma Prieta Montserrat Laki

11. Earthquakes

12. How do they occur? Formed when plates get stuck due to friction and then slip releasing energy

13. Earthquakes Kashmir 2005 Richter scale-7.6

14. Earthquakes Loma Prieta 1989 Richter scale-6.9

15. Famous Earthquakes Japan 2011 – 8.9 magnitude on Richter Scale

16. How ready is San Francisco? SF Will be hit, in the next few years, by the Big One. An earthquake three times more powerful than Loma Prieta. lies on the San Andreas Fault where big, sudden movements occur Although firefighters and police train regularly, everything is not ready. The bridges and hospital may not be able to cope with the earthquake. Scientists say that there is a 2 in 3 chance of a “Big One” by 2032.

17. Volcanoes

18. Volcanoes – What are they? Formed at destructive or constructive plate margins Erupt lava Large mountains

19. 1.Destructive boundaries Subduction occurs Material melts into molten magma of mantle Weak crust melted away Surface volcano formed 2.Constructive boundaries Plates move apart Ocean trench made Magma comes through Seabed volcano formed How are they formed?

20. Tectonic activity Magma under high pressure Pressure released, lava erupts from volcano Like shaking a fizzy drink and opening it Why do they erupt?

21. Types of volcano ShieldComposite Super

22. Where are the Earth’s volcanoes?

23. Active Dormant Extinct States of volcanoes

24. Volcanoes Laki 1783-84

25. Volcanoes Montserrat 1995

26. QUIZ

27. 1)What two metals is the core mostly made up of ?

28. 2) What tectonic plate are we on ?

29. 3) Give an example of the hotspot theory

30. 4) What is the largest volcano on Earth?

31. 5) What was the magnitude of the Kashmir, 2005 earthquake?

32. 6) What sort of magma is formed at destructive margins?

33. 7) In what year did Mount Pinatubo erupt?

34. 8) Name 5 objects that you would have in an emergency earthquake pack

35. 9) What is the global distribution of volcanoes called?

36. 10) What are the three states of volcanoes

37. Thanks for listening.