Across
- 4. a place where extremely hot material from inside Earth errupts at the surface
- 6. patterns of magnetism trapped in rocks on each side of plate boundaries
- 9. an instrument that detects the seismic waves from an earthquake
- 10. the place below ground where an earthquake starts
- 11. the crust that forms the ocean floor
- 12. where plates are moving colliding with each other
Down
- 1. a layer of 'plastic' semi-solid rock in the lower mantle
- 2. a chain of islands formed at the edges of colliding tectonic plates where one plate subducts
- 3. the process of continents breaking up, subsiding and allowing in water from the sea
- 5. where plates are moving apart from eachother in opposite directions
- 7. when one plate sinks below another plate during a collision
- 8. a longitudinal seismic wave that travels fast through Earth