Across
- 2. The remains or traces of an ancient organism preserved in rock
- 5. The rigid outer part of Earth, made of the crust and upper mantle
- 7. The squeezing of sediment by the weight of overlying layers
- 10. The wearing away and removal of rock
- 13. Small rock fragments such as mud, sand or gravel
- 15. The movement of continents around the surface of Earth
- 16. A place where two tectonic plates move away from each other
- 17. The set of changes that turn one rock type into another
- 18. A place where two tectonic plates move towards each other
- 19. A border between two neighbouring tectonic plates
Down
- 1. Any rock formed by the cooling of magma or lava
- 3. The sinking of one tectonic plate beneath another
- 4. The gluing together of sediment by new mineral crystals
- 6. A place where two tectonic plates slide past each other
- 8. A section of the crust and upper mantle
- 9. Any rock that has been changed by intense heat and pressure
- 11. Any rock formed when sediment is compacted or cemented
- 12. The thickest layer of Earth, between the core and the crust
- 14. A natural substance usually found as crystals in rocks