plate tectonics
Across
- 2. The weight of a subducting plate helps pull the trailing lithosphere into the subduction zone
- 5. It is a hypothesis which proposed that earth's continents had once been joined in one big landmass
- 6. A greek word that means "all the earth"
- 7. This is a change in earth's magnetic field.
- 8. A device that can detect small changes in magnetic fields.
- 9. A line on a map that connects points that have the same age
- 10. states that new ocean crust is formed at ocean ridges and destroyed at deep-sea trenches
Down
- 1. one of the two plates is descending beneath the other
- 3. states that earth's crust and rigid upper mantle are broken into enormous slabs called plates
- 4. The study of this magnetic record