The Earth Year 8

3. The theory that all the rocks were formed by sudden events such as volcanic eruptions.
5. Sedimentary rock made from fossilised shells of ancient sea creatures.
6. mineral with sharp edges
8. An igneous rock with large crystals.
9. Rock made from grains and fragments dropped on the bottom of a river, lake or sea
11. The idea that the world was created by a divine being.
13. igneous rock with very tiny crystals
16. molten rock that runs out of volcanoes.
17. layers of sediment or rock are squashed by the weight of sediment above them
18. Rock made from interlocking crystals that are not in layers.

1. Plate _________. The modern theory that the Earth’s surface is split into separate plates.
2. signs of past life, such as the remains of a dead animal or plant, preserved in rock
4. The idea that rocks were formed over many millions of years by the same processes that we see happening today.
6. Minerals from water that flows through the sediment ‘glue’ the grains of rock together
7. When rocks are broken up by physical, chemical or biological processes
10. Rock made from interlocking crystals that are usually lined up or in layers.
12. A Metamorphic rock made from limestone
14. The part of the Earth below the crust.
15. Molten rock beneath the surface of the Earth.