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Terms: earthquakes
Matches: 91    Displayed: 20


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  1. Earthquakes (CAG Enterprises)
      Provides information on earthquakes globally.

  2. Plate Tectonics and Earthquakes (Wheeling Jesuit University)
      Provides a graphic of the world, including convergent, divergent, and transform plate boundaries.

  3. Earthquakes and Volcanoes (University of California - Coe and Merrick)
      Provides a lesson to study earthquakes and volcanoes. 3-01

  4. Severity of Earthquakes - Scales (
      "The severity of an earthquake can be expressed in terms of both intensity and magnitude. The two terms are quite different, however, and they are often confused. Intensity is based on the observed effects of ground shaking on people, buildings, and natural features. It varies from place to place within the disturbed region depending on the location of the observer with respect to the earthquake epicenter. Magnitude is related to the amount of seismic energy released at the hypocenter of the earthquake. It is based on the amplitude of the earthquake waves recorded on instruments, which have a common calibration. Magnitude is thus represented by a single, instrumentally determined value."

      "The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes."

  5. Facts About Earthquakes (
      Provides information on the strongest earthquakes.

  6. How Earthquakes Happen (BBC News)
      Provides an animation showing how earthquakes happen. 2-05

  7. -Measuring Earthquakes (CNN News)
      Explains how the strength of earthquakes is measured. 02-10

  8. The Ten Deadliest Earthquakes (
      "The deadliest quake of all time might be one of the least talked about, considering it occurred nearly 450 years ago. Centered in China's central Shaanxi province, the 1556 quake claimed the lives of some 830,000 people." 03-10

  9. Largest Earthquakes Since 1900 (CNN News)
      Provides locations. 03-11

  10. -Waste Water from Fracking Causes Earthquakes (
      "It's been known for a long time that humans could induce earthquakes by pumping fluids underground. Back in 1962, the U.S Army injected toxic waste fluids into a deep well at the Rocky Mountain Arsenal northwest of Denver, but then stopped after the area was rattled over five years by more than 1,500 quakes, including one that shook chandeliers at the state Capitol and forced legislators to take cover."

      "Seismologists' big concern is not the fracking process itself, but what what operators do with the enormous quantities of waste water that flows back out of the well afterward. "

      "One company has developed a system that uses gelled propane instead of water. Because the fluid merges into the oil and gas being extracted, it could eliminate the need to drain away waste water. Friction-reducing additives also eventually could allow operators to keep reusing the same water in wells, instead of having to dispose of it." 03-15

  11. Oil Fracking and Earthquakes

  12. Earthquakes: San Francisco Earthquake of 1906 (
      "Through this lesson, the student will come to understand the significance of the 1906 San Francisco earthquake through the study of primary documents. The student will also apply his/her research skills to the study of primary documents from various other key historical events." 04-06

  13. Plate Tectonics - Himalayan Mountains (USGS)
      Provides a history of the collision of the plate carrying India with Asia, forming the Himalayan Mountains.

  14. -Plate Tectonics (USGS)
      Provides a comprehensive description of plate movement, including examples. 2-05

  15. Science Projects (The Tech Museum)
      Provides interactive projects in science in topics such as robotics, lasers, earthquakes, space exploration, and DNA. 12-02

  16. Plate Tectonics - The Theory (U.S. Geological Survey)
      Provides graphics and explanations. Rather comprehensive. 1-00

  17. Plate Tectonics - Animated Geological History (Berkeley)
      Displays how plates looked in the past. 1-00

  18. Plate Tectonics - History of the Theory (Berkeley)
      Provides a detailed history. 1-00

  19. Plate Tectonics - History of the Theory, Alfred Wegener (Berkeley)
      Provides a biography of the man who is credited greatly for the theory of plate tectonics, as well as a history of the development of the theory. 1-00

  20. Plate Tectonics - The Mechanism (Berkeley)
      Describes how plate tectonics operate and includes diagrams. 1-00

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