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Chapter 8 Earthquakes Preview CRCT Preparation < Back Next > Preview Main Chapter 8 CRCT Preparation 1. What happens when two tectonic plates push against each other? A Potential energy is released. B Kinetic energy is released. C Potential energy builds up. D Nothing happens. < Back Next > Preview Main Chapter 8 CRCT Preparation 1. What happens when two tectonic plates push against each other? A Potential energy is released. B Kinetic energy is released. C Potential energy builds up. D Nothing happens. < Back Next > Preview Main Chapter 8 CRCT Preparation 2. A seismologist is setting up an earthquake research laboratory. Which of the following pieces of laboratory equipment would be the most useful for measuring the magnitude of an earthquake? A Richter scale B seismograph C shake table D epicenterometer < Back Next > Preview Main Chapter 8 CRCT Preparation 2. A seismologist is setting up an earthquake research laboratory. Which of the following pieces of laboratory equipment would be the most useful for measuring the magnitude of an earthquake? A Richter scale B seismograph C shake table D epicenterometer < Back Next > Preview Main Chapter 8 CRCT Preparation 3. An earthquake model that uses gelatin to simulate rock is limited because A rock does not shake during earthquakes. B gelatin has a different density than rock has. C you cannot eat rock. D gelatin has a different color than rock has. < Back Next > Preview Main Chapter 8 CRCT Preparation 3. An earthquake model that uses gelatin to simulate rock is limited because A rock does not shake during earthquakes. B gelatin has a different density than rock has. C you cannot eat rock. D gelatin has a different color than rock has. < Back Next > Preview Main Chapter 8 CRCT Preparation 4. Earthquake waves that cause the ground to move up and down, much like ocean waves move water particles, are known as A S waves. B body waves. C surface waves. D P waves. < Back Next > Preview Main Chapter 8 CRCT Preparation 4. Earthquake waves that cause the ground to move up and down, much like ocean waves move water particles, are known as A S waves. B body waves. C surface waves. D P waves. < Back Next > Preview Main Chapter 8 CRCT Preparation 5. The seismogram shows the ground movement that occurred during a recent earthquake in northwestern Georgia. Which wave type caused the largest ground movements? A P waves C body waves B S waves D surface waves < Back Next > Preview Main Chapter 8 CRCT Preparation 5. The seismogram shows the ground movement that occurred during a recent earthquake in northwestern Georgia. Which wave type caused the largest ground movements? A P waves C body waves B S waves D surface waves < Back Next > Preview Main Chapter 8 CRCT Preparation 6. As part of an earthquake modeling lab experiment, Dale must determine the density of a sample of rock. Density is determined by dividing the mass of the sample by its volume. Which pieces of laboratory equipment would be the best choice for making the necessary measurements? A beaker, graduated cylinder B petri dish, balance C balance, graduated cylinder D graduated cylinder, stopwatch < Back Next > Preview Main Chapter 8 CRCT Preparation 6. As part of an earthquake modeling lab experiment, Dale must determine the density of a sample of rock. Density is determined by dividing the mass of the sample by its volume. Which pieces of laboratory equipment would be the best choice for making the necessary measurements? A beaker, graduated cylinder B petri dish, balance C balance, graduated cylinder D graduated cylinder, stopwatch < Back Next > Preview Main Chapter 8 CRCT Preparation 7. What is the difference between plastic deformation and elastic deformation? A In plastic deformation, tectonic plates move on top of a layer of plastic rock; in elastic deformation, they remain fixed. B In plastic deformation, blocks move over one another; in elastic deformation, blocks slide past one another. C In plastic deformation, earthquakes occur; in elastic deformation, they do not. D In plastic deformation, rock is reshaped; in elastic deformation, rock is stretched to its breaking point. < Back Next > Preview Main Chapter 8 CRCT Preparation 7. What is the difference between plastic deformation and elastic deformation? A In plastic deformation, tectonic plates move on top of a layer of plastic rock; in elastic deformation, they remain fixed. B In plastic deformation, blocks move over one another; in elastic deformation, blocks slide past one another. C In plastic deformation, earthquakes occur; in elastic deformation, they do not. D In plastic deformation, rock is reshaped; in elastic deformation, rock is stretched to its breaking point. < Back Next > Preview Main Chapter 8 CRCT Preparation 8. Hebert is drawing a diagram of an earthquake as part of a field investigation. What label should Hebert apply to the point inside Earth where the earthquake begins? A epicenter B focus C ground zero D plate boundary < Back Next > Preview Main Chapter 8 CRCT Preparation 8. Hebert is drawing a diagram of an earthquake as part of a field investigation. What label should Hebert apply to the point inside Earth where the earthquake begins? A epicenter B focus C ground zero D plate boundary < Back Next > Preview Main Chapter 8 CRCT Preparation 9. Which of the following statements best describes elastic rebound? A Rock loses cohesion and allows water to flow into newly opened spaces. B Rock slips along a fault, releases energy as seismic waves, and returns to its original shape. C Rock changes shape, but does not release significant amounts of energy. D Rock becomes compacted under pressure and realigns its mineral grains. < Back Next > Preview Main Chapter 8 CRCT Preparation 9. Which of the following statements best describes elastic rebound? A Rock loses cohesion and allows water to flow into newly opened spaces. B Rock slips along a fault, releases energy as seismic waves, and returns to its original shape. C Rock changes shape, but does not release significant amounts of energy. D Rock becomes compacted under pressure and realigns its mineral grains. < Back Next > Preview Main Chapter 8 CRCT Preparation 10. The table summarizes the frequency of earthquakes of various sizes throughout the world. Based on the data given in the table, approximately how many earthquakes in the range of 4.0-4.9 happen each year? A 50 C several thousand B 400 D several million < Back Next > Preview Main Chapter 8 CRCT Preparation 10. The table summarizes the frequency of earthquakes of various sizes throughout the world. Based on the data given in the table, approximately how many earthquakes in the range of 4.0-4.9 happen each year? A 50 C several thousand B 400 D several million < Back Next > Preview Main Chapter 8 CRCT Preparation 11. There are three types of faults: strike-slip, reverse, and normal. With what type of plate motion is each associated? Describe how the Earth’s crust is affected by each type of motion. < Back Next > Preview Main Chapter 8 CRCT Preparation 11. Answer - Full-credit answers should include the following points: • Strike-slip faults occur with transform motion. Blocks of the Earth’s crust slide horizontally past one another. • Reverse faults occur with convergent motion. Blocks are pushed together and (usually) one slides under the other. • Normal faults occur with divergent motion. Blocks are being pulled away from one another. < Back Next > Preview Main Chapter 8 CRCT Preparation 12. A small earthquake struck Menlo, Georgia, on April 29, 2003. Menlo was either the earthquake’s focus or its epicenter. Tell which is correct and explain your answer. < Back Next > Preview Main Chapter 8 CRCT Preparation 12. Answer - Full-credit answers should include the following points: • An earthquake’s focus is the point inside the Earth where the earthquake originated; it is not a point on Earth’s surface. • An earthquake’s epicenter is located at the point on Earth’s surface that is directly above the point where the earthquake originated. • Menlo was the earthquake’s epicenter. < Back Next > Preview Main