The Earth

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

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.