Convection/Plate Tectonics
Across
- 3. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
- 5. A plate boundary where two plates move toward each other.
- 6. A plate boundary where two plates move away from each other.
- 8. The process by which molten material adds new oceanic crust to the ocean floor
- 9. the study of changes in Earth's magnetic field, as shown by patterns of magnetism in rocks that have formed over time
- 11. A deep valley that forms where two plates move apart
Down
- 1. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
- 2. A plate boundary where two plates move past each other in opposite directions
- 4. The hypothesis that the continents slowly move across Earth's surface.
- 6. a deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
- 7. the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
- 10. The name of the single landmass that broke apart 200 million years ago and gave rise to today's continents