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Question of the Day. Question: Where exactly is the plate boundary between the North American and Pacific plates? Answer: … … …. DON ’ T TURN IN But Take Out For Stamping: The Bay Area Has It ’ s Faults p. 575 CYU 1& 4. Seismic Waves. Seismic Waves. Surface Waves cause damage

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Question of the day
Question of the Day

Question: Where exactly is the plate boundary between the North American and Pacific plates?

Answer: … … …

  • DON’T TURN IN

  • But Take Out For Stamping:

  • The Bay Area Has It’s Faults

  • p. 575 CYU 1& 4



Seismic waves1
Seismic Waves

  • Surface Waves cause damage

  • Body Waves travel through earth

    • Primary (P) Waves

    • Secondary (S) Waves


Seismic waves2
Seismic Waves

  • Body waves are used to find the earthquake’s epicenter

    • P waves: faster

    • S waves: slower


P 575 cyu 1 4
p. 575 CYU 1 + 4

  • Identify which type of seismic wave is described in each of the following:

a. Cannot travel through the core.

b. Cause the most damage to buildings.

c. Are the first waves to reach seismograph stations.

S waves

Surface Waves

P Waves


P 575 cyu 1 41
p. 575 CYU 1 + 4

  • Differentiate between the focus and the epicenter of an earthquake.

4. The focus of an earthquake is the area along a fault where an earthquake originates while the epicenter of an earthquake is the point on the surface of the Earth directly above the focus.


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