Across
- 2. The place below the ground where an earthquake starts
- 3. Plates are pulled apart at the mid-ocean ridges
- 4. A chain is islands formed at the edge of colliding plates where 1 plate subducts
- 6. A layer of 'plastic' semi-solid rock in the lower mantle on which Earth's tectonic plates move
- 8. The name for the crust and the upper mantle together; Earth's tectonic plates
Down
- 1. When 1 plate sinks below another plate during a collision
- 2. Mountains formed by crust crumpling upwards as plates collide
- 3. Transverse seismic wave that travels through Earth
- 5. A longitudinal seismic wave the travels fast through Earth
- 7. A depression in the ocean floor