Geosystems crossword 1

1. Naturally occurring, solid, crystalline substance.
6. Metallic centre of the Earth.
7. The shape that silicon and oxygen ions are arranged in to build up the silicate structure.
11. Rigid layer that forms the plates.
13. Where lithosphere is created.
15. Rocks formed after other rocks are weathered, eroded, transported, deposited and compacted into rock.
16. Geophysical boundary between the crust and the mantle.
17. The theory that the Earth's lithosphere is divided into plates and they move over the surface of the Earth.
19. Process occurring in the mantle that moves the plates.
21. Ductile layer on which the plates move.

2. Set of geological process that relates all three rock classes.
3. Liquid part of the Earth that generates the magnetic field.
4. Forms the bulk of the Earth and convects slowly.
5. Process that forms crystals.
8. Rocks formed after other rocks are subjected to pressure (buried) and temperature (heated).
9. The most common type of mineral.
10. Rocks formed by crystallisation of molten rock (magma or lava).
12. Where lithosphere is destroyed and recycled back into the asthenosphere.
14. Where plates move past one another without being created or destroyed.
18. One plate being pushed beneath another into the asthenosphere.
20. The tendency of minerals to break along a regular plane.