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Unformatted text preview: why? Know what to do if you’re in an earthquake (see lecture notes). Tsunamis Be able to explain how tsunamis form. How fast can tsunamis travel? What are possible warning signs that a tsunami is coming? What should you do if you’re near the ocean coast and you see these signs, or receive other information that tells you a tsunami’s coming? Vocabulary aftershocks recurrence interval compressional waves shear waves epicenter surface waves hypocenter travel‐time curve foucs liquefaction Review questions to study Chpt. 10 questions 1, 3, 6, 7, 9, 10, 11, 15 Impact Cratering Know the formula for kinetic energy (KE = ½ mv2) and the approximate range of asteroid and comet velocities when these objects strike the Earth. How often can we expect an asteroid 10 km across (roughly 7 miles) to strike the Earth? Be able to explain how impact craters act as “drills” and as “clocks.” Has the rate of impact crater formation been constant through Earth’s history? Be able to explain why Earth has so few impact craters compared to the other terrestrial planets. Be able to describe the 3 phases of impact crater formation. Understand the answers to the questions asked in class about the video Supercomet: After the Impact. Know both the immediate and long‐term affects of a...
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- Fall '08