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Surface and Seismic Waves

Surface and Seismic Waves. Surface waves. Travels along a surface (duh!) separating two media Bobber will not move out at sea Wave collapses at shore – causing to move things due to friction. EARTHQUAKE!!!. Violent shaking of earth’s crust caused by seismic activity

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Surface and Seismic Waves

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  1. Surface and Seismic Waves

  2. Surface waves • Travels along a surface (duh!) separating two media • Bobber will not move out at sea • Wave collapses at shore – causing to move things due to friction

  3. EARTHQUAKE!!! • Violent shaking of earth’s crust caused by seismic activity • Caused at from a fault (a crack or fracture in the earth’s crust) • We get faults by the movement of boundaries between 2 tectonic plates • Caused by the eruption of volcanoes

  4. Types of Boundaries • Convergent – toward each other

  5. Types of Boundaries

  6. Types of Boundaries • Divergent – away from each other

  7. Types of Boundaries

  8. Types of Boundaries • Transform – past each other

  9. Types of Boundaries

  10. Types of Boundaries

  11. Seismic Waves of Earthquakes • Speed of these waves is equal to the rigidity of the rock it passes through • Two different types – P and S waves

  12. Comparison

  13. P and S waves

  14. Form of Travel

  15. More Earthquake Info • http://earthquake.usgs.gov/learn/kids/eqscience.php

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