Plate tectonics is a theory that models the earth's crust as a set of large "plates" that slowly bump and grind against each other. Most earthquakes are the result of strain release along zones of weakness (faults) in response to the slow movement of those crustal plates (Figure 1).
EARTHQUAKES All-Hazard Mitigation Plan: Section 4.0 Earthquakes 4-1 Kenai Peninsula Borough 4.0 Earthquakes 4.1 Why Focus on Earthquake Hazard Mitigation?
Earthquakes, Volcanoes, and Tsunamis: Resources for Environmental Literacy vii T hese materials were the product of many hands—teachers, curriculum developers, scientists, and Environmental Literacy Council (ELC) staff members.
Acknowledgments . The Federal Emergency Management Agency (FEMA) acknowledges with gratitude the many individuals who provided teaching knowledge, experience, and classrooms in the
Earthquakes March 2007 Talking About Disaster: Guide for Standard Messages Earthquakes- 1 Earthquakes AWARENESS MESSAGES Why talk about earthquakes?
DANGER ZONES Earthquakes occur most frequently west of the Rocky Mountains, although historically the most violent earthquakes have occurred in the central United States.
Although earthquakes occur less frequently in the Eastern United States, studies show that urban areas in the East could face devastating losses because severe shaking would affect a larger area than a similar earthquake in the Western United States.
1 Earthquakes •What is an earthquake?-A vibration Elastic Rebound •An earthquake is the vibration of the earth produced by the rapid release of energy •Over time, stresses build up within rock units •Rock units can withstand only a limited amount of stress and therefore may break over ...
DRAFT - January 2008 EARTHQUAKES - Hazard Description What is an earthquake? (from: 2007 Illinois Natural Hazard Mitigation Plan) "Earthquakes occur when rocks forming the earth's crust slip past each other along a fault.
This Dynamic Planet World Map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics Compiled by Tom Simkin, 1 John D. Unger, 2 Robert I. Tilling, 2 Peter R. Vogt, 3 and Henry Spall 2 Cartography by James E. Queen, Will R. Stettner, and Paul Mathieux 1994 Note This map shows the Earth's ...