Across
- 5. a supercontinent comprising all the continental crust of the earth
- 8. HASS-Harry Hammond Hess (May 24, 1906 – August 25, 1969)
- 10. the remains or impression of a prehistoric organism preserved in petrified form
- 12. DRIFT-Continental drift is the hypothesis that the Earth's continents
- 13. CRUST- THE PORTION OF THE EARTH'S CRUST THAT WE WALK ON
- 14. long, seismically active submarine ridge system situated in the middle of an ocean basin
- 15. FIELD-a region around a magnetic material
Down
- 1. sideways and downward movement of the edge of a plate of the earth's crust
- 2. SPREADING-the formation of new areas of oceanic crust, which occurs through the upwelling of magma
- 3. OF PLATE TECHTONICS-Plate tectonics is a scientific theory that explains how major landforms
- 4. TRENCH-Deep ocean trenches are steep-sided depressions in the ocean bottom
- 6. A VERY HARD ROCK
- 7. dark, fine-grained volcanic rock
- 9. CRUST- THE CRUST PORTION OF THE EARTH'S CRUST
- 11. PLATE-A tectonic plate is a massive slab of solid rock
- 16. WEGENER-Alfred Wegener, in full Alfred Lothar Wegener, (born November 1, 1880, Berlin, Germany