Earth Science

1234567891011121314151617181920
Across
  1. 4. by magma pushing through the the crust
  2. 7. current of which hot air rises and cool air falls
  3. 8. giant wave of which is caused by movement of the Earth underwater
  4. 9. of North America, Europe and Asia
  5. 13. scientist who had the theory of continental drift Alfred *******
  6. 14. name of the single continent
  7. 15. layer of which is approximatley 100km thick that convers the Earth
  8. 17. type of movement where tectonic plates collide
  9. 19. denser of the two crusts
  10. 20. LINESCracks in the Earth's crust caused by plates sliding together
Down
  1. 1. process of which the forces of gravity pull the oceanic plate under the continential plate
  2. 2. TECTONICS/The theory of the formation and movement of the plates that cover the Earth's surface
  3. 3. by rapid movement of the ground and a rpaid release of energy as plates move
  4. 5. type of movement where tectonic plates move away from each other
  5. 6. instrument capable of of detecting plate movement not perciptible to humans
  6. 10. layer of hot semi-solid rock material that the crust of the Earth floats on
  7. 11. light crust made from aluminium and silicon
  8. 12. continent of which South America, Australia, Antarctica and Africa once consisted of
  9. 16. ******* magnitude scale was developed by Charles F *******
  10. 18. DRIFT/The theory that the continents are all part of the single continent Pangeae