Plate Tectonics Crossword

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Across
  1. 2. the supercontinent that was discovered by Alfred Wegener
  2. 4. a mountain where lava can erupt or explode out of
  3. 5. heat transfers like this when there is direct contact of two objects
  4. 6. a certain flow which transfers heat
  5. 7. a measure of mass in a given volume of a substance
  6. 8. a device powered by sound waves which measures the distance to an object
  7. 11. an idea introduced by Alfred Wegener that suggests the continents slowly moved over Earths surface
  8. 17. sections of Earths crust that are constantly in motion in motion
  9. 18. a process where mid-ocean ridges continually add new material to the ocean floor
  10. 19. a process where old ocean floor is sucked into the mantle
Down
  1. 1. long passageways to the inside of the Earth where old seafloor is sucked in and turned into new seafloor
  2. 3. cracks in Earths crust where there has been moving plates
  3. 5. heat transfers like this when in the form of a liquid
  4. 6. a tectonic boundary where plates are moving into each other
  5. 9. a deep valley of Earths crust that has diverged onto land
  6. 10. a mixture of rock-forming substances, gases, and water from the mantle that is underground
  7. 12. a tectonic boundary where plates are moving away from each other
  8. 13. heat transfers like this when there is energy coming directly from a source like the sun or fire
  9. 14. a long underwater chain of mountains
  10. 15. a piece of an ancient organism that was preserved in rock
  11. 16. a tectonic boundary where plates are sliding past each other