Let's Rock!

2. A solid made of one or more minerals.
4. What L is a molten rock expelled by a volcano during eruption.
6. A naturally occurring substance with a defined chemical formula. A component of rocks.
7. A black or grey rock that breaks of easily into layers. It is used as a roofing material.
8. What F describes preserved remains of animals and plants from the remote past, often found in rocks.
13. A white, smooth rock with tiny sparkling crystals; used in sculptures and as a building material.
14. A black or grey rock with very hard structure, formed when lava cools down rapidly.
15. What C is a rock consisting of individual fragments of rocks cemented together?
16. This types of rocks are formed when other types of rocks are exposed to high temperatures and pressures.

1. A pink or grey igneous rock formed from magma. It is used as a building material and in interior design.
3. This types of rocks are formed when lava cools down and solidifies.
5. A branch of science - study of the solid Earth and rocks.
9. A rock composed mainly from skeletal fragments of marine organisms, like corals.
10. This types of rocks are formed when other types of rocks are weathered away, deposited and hardened.
11. An opening or rupture in the surface of crust of the Earth, allowing molten lava to escape.
12. This rock is composed mainly of sand-sized minerals or rock grains.