Earth's Systems and Materials Review

12345678910111213141516171819
Across
  1. 6. The movement of Earth’s plates that shapes Earth’s surface.
  2. 7. Supercontinent that once included all the continents joined together.
  3. 8. When oceanic and continental plates collide, this landform can form.
  4. 10. Solid metal layer at Earth’s center.
  5. 11. Solid outer layer of the Earth where we live.
  6. 12. Type of boundary where two plates push together.
  7. 13. Earth’s outermost mechanical layer made of solid plates.
  8. 16. Scientist who discovered seafloor spreading
  9. 19. The soft, hot layer beneath the lithosphere where rock flows slowly.
Down
  1. 1. Rising and sinking of hot and cool rock in the mantle that moves the plates.
  2. 2. The force field around Earth caused by movement in the core, part of what causes auroras.
  3. 3. Waves that move side-to-side, up and down, shear rocks, and can only travel through solids.
  4. 4. The liquid metal layer surrounding the inner core.
  5. 5. The middle compositional layer made of hot rock.
  6. 6. Waves that move by pushing and squeezing; they can travel through solids and liquids.
  7. 9. The scientist who proposed the theory of continental drift.
  8. 14. Evidence of the same _____ found on different continents supported continental drift.
  9. 15. Plates slide past each other at this type of boundary.
  10. 17. Chain of islands formed as a tectonic plate moves over a stationary hot spot.
  11. 18. Type of boundary where plates move apart and new crust forms.