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Lecture9

Table of Contents

  1. Journey to the Center of Earth
  2. Why study Earth's interior?
  3. Why study Earth's interior?
  4. Why study Earth's interior?
  5. Why study Earth's interior?
  6. Why study Earth's interior?
  7. Why study Earth's interior?
  8. Why study Earth's interior?
  9. Why study Earth's interior?
  10. Why study Earth's interior?
  11. What's Inside the Earth?
  12. 8.1 How do geologists know about rocks in Earth's interior?
  13. 8.1 How do geologists know about rocks in Earth's interior?
  14. 8.1 How do geologists know about rocks in Earth's interior?
  15. 8.1 How do geologists know about rocks in Earth's interior?
  16. 8.1 How do geologists know about rocks in Earth's interior?
  17. 8.1 How do geologists know about rocks in Earth's interior?
  18. 8.1 How do geologists know about rocks in Earth's interior?
  19. 8.2 How do earthquakes help make images of Earth's interior?
  20. 8.2 How do earthquakes help make images of Earth's interior?
  21. 8.2 How do earthquakes help make images of Earth's interior?
  22. Earthquake Waves
  23. 8.2 How do earthquakes help make images of Earth's interior?
  24. Velocity of Earthquake Waves
  25. 8.2 How do earthquakes help make images of Earth's interior?
  26. Earthquake Waves-travel time
  27. 8.2 How do earthquakes help make images of Earth's interior?
  28. 8.2 How do earthquakes help make images of Earth's interior?
  29. 8.2 How do earthquakes help make images of Earth's interior?
  30. 8.2 How do earthquakes help make images of Earth's interior?
  31. 8.2 How do earthquakes help make images of Earth's interior?
  32. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  33. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  34. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  35. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  36. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  37. 8.4 What composes the interior of Earth?
  38. 8.4 What composes the interior of Earth?
  39. 8.4 What composes the interior of Earth?
  40. 8.4 What composes the interior of Earth?
  41. 8.4 What composes the interior of Earth?
  42. 8.4 What composes the interior of Earth?
  43. 8.5 How hot is the interior of Earth?
  44. 8.5 How hot is the interior of Earth?
  45. 8.5 How hot is the interior of Earth?
  46. 8.5 How hot is the interior of Earth?
  47. 8.5 How hot is the interior of Earth?
  48. 8.5 How hot is the interior of Earth?

Text and Images from Slide

8.2 How do earthquakes help make images of Earth's interior?

The earth and how earthquake waves provide information about the interior.

Careful measurements of waves traveling through Earth show that the waves travel faster through some portions than through others, especially through surface materials versus interior rock. This means that physical properties of surface rock are different from deeper rock.

Fig 8.12

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