Plate Tectonics Crossword

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Across
  1. 3. the outer layer of the Earth, between the surface and the mantle
  2. 5. the assembly of most or all of the Earth's continental blocks to form a single large landmass
  3. 8. ground that is permanently frozen
  4. 9. a pressing or being pressed
  5. 10. a mechanism for plate motion in plate tectonics
  6. 13. the earth's interior between the crust and the core
  7. 14. the vertical transport of atmospheric properties
  8. 15. a long narrow excavation in the ground
  9. 18. the outer part of the earth
  10. 19. a crack in the earth's surface where there has been movement of one or both sides
  11. 20. valley a long narrow valley
Down
  1. 1. the upper layer of the earth's mantle
  2. 2. where lava comes from
  3. 4. the movement of tectonic plate lithosphere from the convection currents in the asthenosphere
  4. 6. the boundary between the plates
  5. 7. a measure of the warmth or coldness
  6. 11. a location on the Earth's surface that has experienced active volcanism
  7. 12. a measure of mass per unit of volume
  8. 16. opposite of cold
  9. 17. the point on the earth's surface vertically above the focus of an earthquake