The Earth
Across
- 6. mineral with sharp edges
- 7. tectonics The modern theory that the Earth’s surface is split into separate plates that are moved around
- 8. Rock grains and fragments dropped on the bottom of a river, lake or sea
- 12. The idea that rocks were formed over many millions of years by the same processes that we see happening today.
- 14. Molten rock beneath the surface of the Earth.
- 15. Minerals from water that flows through the sediment ‘glue’ the grains of rock together
Down
- 1. When rocks are broken up by physical, chemical or biological processes
- 2. signs of past life, such as the remains of a dead animal or plant, preserved in rock
- 3. igneous rock with very tiny crystals
- 4. The theory that all the rocks were formed by sudden events such as volcanic eruptions.
- 5. The idea that the world was created by a divine being.
- 9. layers of sediment or rock are squashed by the weight of sediment above them
- 10. molten rock that runs out of volcanoes.
- 11. Rock made from interlocking crystals that are not in layers.
- 13. An igneous rock with large crystals.
- 14. The part of the Earth below the crust.
- 16. Rock made from interlocking crystals that are usually lined up or in layers.