PLATE TECTONICS

1234567891011121314151617181920
Across
  1. 3. They move 5-10cm a year
  2. 5. Mountain that spews out lava
  3. 11. Makes plates "float" on the asthenosphere
  4. 15. Boundary where plates move apart
  5. 16. Top layer of Earth's surface
  6. 18. Formed where there is a convergent boundary
  7. 19. Happens usually along a Transform Boundary
  8. 20. Largest mountain range
Down
  1. 1. Middle layer of Earth's surface
  2. 2. Scale that measures damage in an earthquake
  3. 4. Holds the asthenosphere, crust, and upper mantle
  4. 6. Plate we live on
  5. 7. The theory scientists use to expain plate movement
  6. 8. Made of liquid metals
  7. 9. Boundary where plates grind past each other
  8. 10. Boundary where plates collide
  9. 12. Scale that measures energy in an earthquake
  10. 13. Made of iron and nickel
  11. 14. Wears down Earth's surface
  12. 17. Mega Continent