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