mini science crossword game!!

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Across
  1. 1. the innermost layer of the Earth
  2. 5. when a species completely dies out
  3. 7. the fastest seismic waves
  4. 10. increases as you go deeper into the Earth
  5. 11. the densest type of crust
  6. 12. the imprints of organisms that lived long ago
  7. 13. when plates collide with each other
Down
  1. 1. the outermost layer of the Earth
  2. 2. where fossils usually form from
  3. 3. the middle layer of the Earth
  4. 4. when plates diverge from each other
  5. 6. when plates slide past each other
  6. 8. rock formed from magma
  7. 9. kind of rock formed from sediments