crossword for layers, plates, and boundaries of earth

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Across
  1. 1. layer of earth made of two parts inner and outer
  2. 3. type of crust made of basalt
  3. 5. when the plates move apart
  4. 6. largest layer of earth
  5. 7. the thinnest layer of earth
  6. 8. when the plates slide by each other
Down
  1. 1. currents that move the plates slowly
  2. 2. when the plates collide
  3. 4. type of crust made of granit