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Gr. 8 Pages 325 - 327 NOTES: EARTHQUAKES Name: 1. Give 3 expressions used to describe the phenomenon by which the Earth’s crust moves. . _____________________________________________________________________________ 2. What is a seismic wave, how are they formed & what do they cause? _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 3. What is a seismologist & a seismograph? _____________________________________________________________________________ _____________________________________________________________________________ 4. What 3 plate movements cause earthquake? _____________________________________________________________________________ _____________________________________________________________________________ 1 5. Draw the 3 movements caused by earthquake causing plates & comment on the resulting earthquake’s intensity for each case. 6. Waves produced under the ocean during an earthquake are called _______________________________or ________________________________. 7. What happend when these waves reach the continental shelf & then the coast? _____________________________________________________________________________ _____________________________________________________________________________ 8. What is the Ring of Fire found in the Pacific? _____________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 9. The line of the Ring of Fire passes directly above what? ___________________________________________________ ___________________________________________________ 10. The Mid-Atlantic Ridge, the Mediterrean contour & the African fracture lines are tectonic plate limits & correspond to what type of zone? ___________________________________________________ ____________________________________________________ ____________________________________________________ 2