Plate tectonics

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Across
  1. 2. Instrument used to measure earthquakes.
  2. 4. A type of boundary that is a fault along a plate boundary where the motion is predominantly horizontal.
  3. 5. Floats out in the deep sea and is used to detect pressure changed caused by tsunamis.
  4. 6. a type of boundary where an area on Earth where two or more lithospheric plates collide.
  5. 7. one plate will bend and slide under the other. This process is called__________
  6. 8. A layer inside a planetary body bounded below by a core and above by a crust.
Down
  1. 1. A plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other.
  2. 3. What this crossword puzzle is about.
  3. 4. A series of waves in a water body caused by the displacement of a large volume of water.
  4. 8. The molten or semi-molten natural material from which all igneous rocks are formed.