science

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Across
  1. 4. fault break in rock due to shearing forces, where rocks on either side of the fault suface move past each other with little upward or downward movement
  2. 5. plastic-like layer below the lithosphere
  3. 8. single large landmass made up of all the continents connected together that broke apart 200 million years ago
  4. 9. device used by seimologists to record primary, secondary, suface waves from earthquakes
  5. 10. current cycle of heating, rising, cooling, and sinking that is thought to be the force behind plate tectioncs
  6. 11. waves energy waves that are produced at and travel outward from the earthquake's focus
  7. 12. waves waves that travel outward from an earthquke's focus and move through Earth by causing particles in rocks to vibrate at right angles to the direction of the wave
  8. 14. in an earthquake, the point beneath Earth's surface where energy release occurs
  9. 15. rigid, outermost layer of Earth that is about 100km thick, and is composed of the crust and part of the upper mantle
  10. 19. waves waves that travel outward from an Earthquake's focus and cause particles in rocks to move back and forth in the same direction the wave is moving
Down
  1. 1. fault break in rock due to compression forces, where rocks above the fault surface move upward and over the rocks below the fault surface
  2. 2. Earth's outermost layer, which varies in thickness from about 5km to 60km and is separated from the mantle by the Moho Discontinuity
  3. 3. drift hypothesis proposed by Alfred Wegener that the states that continents have moved slowly to their current locations on Earth
  4. 4. scientist who studiesearthquakes and seismic waves
  5. 6. largest layer inside Earth, lying directly above the outer core and that is made mostly of silicon, oxygen, magnesium, and iron
  6. 7. measure of the energy released by an earthquake
  7. 13. core liquid core that surrounds Earth's solid inner core, and that is made mostly of iron
  8. 16. core very dense, solid center od the Earth that is made of mostly iron with smaller amounts of oxygen, silicon, sulfur, or nickel
  9. 17. point of Earth's surface directely above an earthquake's focus
  10. 18. fault break in rock due to tension forces, where rock above the fault surface moves downward in relation to rock below the fault surface