Earths systems vocabulary list

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Across
  1. 4. Form at convergent boundaries where one plate subducts under another, and magma underground is pushed upward.
  2. 5. Boundary Boundary where tectonic plates collide.
  3. 7. floor spreading Occurs when divergent plates seperate. Convection currents cause less dense materials to rise.Creates new ocean floor.
  4. 9. The innermost layer of earth. Divided into 2 parts, liquid outer and solid inner. Made of iron and nickel.
  5. 10. The super continent that existed before continents seperated.
  6. 13. spot When magma flows through a crack in the middle of a tectonic plate, and not at a tectonic plate boundary. Hawaiian islands were formed this way.
  7. 14. plates Large pieces of lithosphere that the oceans and continents rest on.
  8. 15. The lower part of earth's mantle, below the asthenosphere.
Down
  1. 1. The outer part of the earth. includes the crust and upper mantle.
  2. 2. boundary Boundary where tectonic plates slide past each other.
  3. 3. The solid, outermost layer of the earth, lying above the mantle.
  4. 6. When a sudden release of energy in the lithosphere creates seismic waves.
  5. 8. boundary Boundary where tectonic plates divide.
  6. 11. Below the lithosphere. Hotter and more fluid part of the mantle.
  7. 12. The layer that lies between earths crust and core. The majority of earth's mass is in this layer.