Across
- 6. Reversal- An event that causes a magnetic field to reverse direction.
- 8. Boundary- The boundary between two plates that slide past each other.
- 10. Boundary- The boundary between two plates that move away from each other.
- 11. Name given to a supercontinent that began to break apart approximately 290 million years ago.
Down
- 1. The process that occurs when one tectonic plate moves under another tectonic plate.
- 2. Spreading- The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
- 3. The circulation of particles within a material caused by differences in thermal energy and density.
- 4. Tectonics- Theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other.
- 5. Drift- The movement of Earth’s continents over time.
- 7. Boundary- The boundary between two plates that move toward each other.
- 9. Ocean Ridge- Long, narrow mountain range on the ocean floor; formed by magma at divergent plate boundaries.