Structure and Function of the Earth

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Across
  1. 2. this the the term for primary waves
  2. 6. this is the instrument used to measure the strength of an earthquake
  3. 7. this is a type of boundary where two plates collide
  4. 9. these can be explosive or slow, but they are always hot and dangerous
  5. 10. this is the place where to plates meet
  6. 11. this is the zone where one plate goes under another plate and goes down into the earth
  7. 12. this is the type of rock that the oceanic plates are made of
Down
  1. 1. this is what happens when a tectonic plate moves
  2. 3. this is a type of boundary where two plates separate
  3. 4. this is the term for secondary waves
  4. 5. these float on the asthenosphere and create the continents and ocean floors
  5. 8. this is the type of rock that the continental plates are made of