Plate boundaries!

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Across
  1. 1. where magma leakes through the Earth's crust
  2. 3. causes seafloor spreading,rift valleys
  3. 4. causes earthquakes
  4. 6. causes mountains,earthquakes,volcanoes
  5. 7. Crust that is older,and thicker
Down
  1. 2. when one plate is pushed under the other
  2. 5. Crust that is younger and thinner