The World

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Across
  1. 6. a circle on the surface of the earth that divides the earth into two equal halves
  2. 10. a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic crust
  3. 11. the gradual movement of the continents across the earth's surface through geological time
  4. 12. Changes in the land’s features caused by the earth itself, such as the movement of tectonic plates
Down
  1. 1. a method to rate the strength or total energy of earthquakes
  2. 2. the deepest part of the ocean and the deepest location on Earth
  3. 3. the area around the Pacific Ocean that has many volcanoes and earthquakes
  4. 4. the great size or extent of something
  5. 5. A supercontinent comprised of all 7 continents combined that existed 200 million years ago
  6. 7. the rigid outer part of the earth, consisting of the crust and upper mantle
  7. 8. a layer of partially melted rock upon which the Earth’s tectonic plates ride and move across
  8. 9. ½ of a sphere; ½ of the earth