plate tectonics

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Across
  1. 2. The continents of Africa, South America, India, Australia, and Antarctica when all the continents were a single landmass.
  2. 4. The vent on the earth's surface through which magma and gases are expelled is a called a BLANK.
  3. 6. the process by which Earth's crust breaks apart; can occur within continental crust or oceanic crust
  4. 8. boundary between two plates that are sliding past each other.
  5. 9. When the earth's tectonic plates move, we call this a BLANK.
  6. 10. where two plates are moving apart, magma comes up to create new crust
Down
  1. 1. boundary between two colliding plates, often associated with mountain building ocean trenches and volcanic islands
  2. 3. The continents of North America and Eurasia when all the continents were a single landmass.
  3. 5. the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle
  4. 7. is the layer of the upper mantle composed of low-density rock matterial that is semiplastic,like putty.