Geosystems crossword 1

4. Naturally occurring, solid, crystalline substance.
6. Where plates move past one another without being created or destroyed.
10. Ductile layer on which the plates move.
11. Geophysical boundary between the crust and the mantle.
14. Where lithosphere is created.
15. Rocks formed after other rocks are weathered, eroded, transported, deposited and compacted into rock.
20. The most common type of mineral.
21. Forms the bulk of the Earth and convects slowly.

1. The shape that silicon and oxygen ions are arranged in to build up the silicate structure.
2. The theory that the Earth's lithosphere is divided into plates and they move over the surface of the Earth.
3. Process that forms crystals.
5. core Metallic centre of the Earth.
7. core Liquid part of the Earth that generates the magnetic field.
8. The tendency of minerals to break along a regular plane.
9. Rigid layer that forms the plates.
12. Where lithosphere is destroyed and recycled back into the asthenosphere.
13. Rocks formed after other rocks are subjected to pressure (buried) and temperature (heated).
16. Rocks formed by crystallisation of molten rock (magma or lava).
17. Process occurring in the mantle that moves the plates.
18. One plate being pushed beneath another into the asthenosphere.
19. Set of geological process that relates all three rock classes.