Shaping Earth's Surface

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Across
  1. 1. Forming a 90-degree angle.
  2. 3. To come together with direct impact.
  3. 5. Zone along the edges of tectonic plates.
  4. 6. A curved line of volcanoes that forms parallel to a plate boundary.
  5. 9. Stress that pulls something apart.
  6. 10. coming from different directions and meeting at the same point.
  7. 11. A force acting on a surface.
  8. 12. The denser plate sinks under the edge of the less-dense plate.
  9. 13. A long, narrow fissure or opening in rock.
  10. 14. _________ boundary forms where two plate collide.
  11. 15. The rupture and sudden movement of rocks along a break or a crack in Earth's crust.
  12. 17. A break in Earth's crust along which movement occurs.
  13. 18. ________ boundary forms where two tectonic plates slide past each other.
Down
  1. 2. Height above sea level.
  2. 4. A vent in Earth's crust through which molten rock flows.
  3. 7. The Rapid downhill movement of soil, loose rocks, and boulders.
  4. 8. An area of many fractured pieces of crust along a large fault.
  5. 16. A wave that forms when an ocean disturbance suddenly moves a large volume of water.