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Homeschool Learning Network Earthquake Crossword Name ___________________________ Date ___________________________ Across 3. An instrument used to detect and record earthquakes. 5. A sea wave that results from large-scale seafloor disturbances, caused often by large earthquakes. 6. A number describing the severity of an earthquake in terms of its effects on the earth's surface and on people. 10. A _________ wave is a seismic wave that travels along the earth's crust. 11. Scale used to define the magnitude of an earthquake. 12. This term is used to describe both sudden slip on a fault, and the resulting ground shaking. 13. How fast a point on the ground is shaking as a result of an earthquake. Down 1. The point within the earth where an earthquake rupture starts. 2. A number that characterizes the relative size of an earthquake. 4. The point on the earth's surface vertically above the point in the crust where a seismic rupture begins. 7. A fracture along which the blocks of crust on either side have moved relative to one another. 8. Earthquakes that follow the largest shock of an earthquake sequence. 9. An earthquake ______ is anything associated with an earthquake that may affect the normal activities of people. 10. The phenomenon felt by humans when an earthquake occurs. © 2001 The Homeschool Learning Network, all rights reserved. The Homeschool Learning Network permits teachers and parents to reproduce this page for non-profit and educational purposes only. http://www.homeschoollearning.com