Plate Tectonics

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Across
  1. 1. Primary, longitudinal, irrotational, push, pressure, dilatational, compressional, or push-pull wave (Plate Tectonic Dictionary, n.d.).
  2. 2. An instrument that records the motions of the Earth, especially earthquakes (Plate Tectonic Dictionary, n.d.).
  3. 3. A scientist who studies earthquakes (Plate Tectonic Dictionary, n.d.).
  4. 8. Shaking of the Earth caused by a sudden movement of rock beneath its surface (Plate Tectonic Dictionary, n.d.).
  5. 9. Molten rock containing liquids, crystals, and dissolved gases that forms within the upper part of the Earth's mantle and crust (Plate Tectonic Dictionary, n.d.).
  6. 11. A written record of an earthquake, recorded by a seismograph (Plate Tectonic Dictionary, n.d.).
  7. 12. The circular depression containing a volcanic vent (Plate Tectonic Dictionary, n.d.).
  8. 14. The theory, first advanced by Alfred Wegener, that Earth's continents were originally one land mass (Plate Tectonic Dictionary, n.d.).
  9. 15. A weak point in the Earth's crust and upper mantle where the rock layers have ruptured and slipped (Plate Tectonic Dictionary, n.d.).
  10. 16. One of the huge moving sections which make up the Earth's crust (Plate Tectonic Dictionary, n.d.).
  11. 18. A steep-sided volcano formed by the explosive eruption of cinders that form around a vent (Plate Tectonic Dictionary, n.d.).
Down
  1. 1. The place where two or more plates in the Earth's crust meet (Plate Tectonic Dictionary, n.d.).
  2. 4. That point on the Earth's surface directly above the hypocenter of an earthquake (Plate Tectonic Dictionary, n.d.).
  3. 5. The process in which one lithospheric plate collides with and is forced down under another plate and drawn back into the Earth's mantle (Plate Tectonic Dictionary, n.d.).
  4. 6. The theory that the Earth's crust and upper mantle (the lithosphere) is broken into a number of more or less rigid, but constantly moving, segments or plates (Plate Tectonic Dictionary, n.d.).
  5. 7. Of or having to do with earthquakes (Plate Tectonic Dictionary, n.d.).
  6. 10. The thin outer layer of the Earth's surface, averaging about 10 kilometers thick under the oceans and up to about 50 kilometers thick on the continents (Plate Tectonic Dictionary, n.d.).
  7. 11. Shear, secondary, rotational, tangential, equivoluminal, distortional, transverse, or shake wave (Plate Tectonic Dictionary, n.d.).
  8. 13. The layer of rock that lies between the crust and the outer core of the Earth (Plate Tectonic Dictionary, n.d.).
  9. 17. The term used for magma once it has erupted onto the Earth's surface (Plate Tectonic Dictionary, n.d.).