Extra Credit Crossword

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Across
  1. 2. What Is The Lithosphere Made Of?
  2. 5. How Many Miles Thick Is The Mantle?
  3. 6. 2-D Representation Of 3-D Space
  4. 8. Darker Lines With Elevation Marked On Them
  5. 9. Where Does Convection Occur?
  6. 10. Alfred Wegner's Own Continent
  7. 12. Formed By A Glacier
Down
  1. 1. Broken Into Several Slabs Called Plates
  2. 3. Tells How Much Vertical Space There Is Between Contour Lines
  3. 4. Harry Hess Served In Which War?
  4. 7. Deposit Of Sediments Built Up By Streams
  5. 11. Formed At Mouth Of River