THE ROCK CYCLE

2. A sedimentary rock formed from compacted sand particles.
6. The cycle describing how rocks transform into other types.
9. Rock that forms when magma or lava cools
10. This rock forms under heat and pressure from limestone.
11. A type of igneous rock that forms below the Earth's surface.
12. The process of rock formation through compaction and cementation.
13. A sedimentary rock often containing fossils, formed from shells.
15. A metamorphic rock with visible, wavy bands of minerals.
16. A rock type that forms when existing rocks are transformed by heat and pressure.
17. A dark, fine-grained igneous rock found in volcanic regions.

1. A sedimentary rock composed of rounded pebbles and sand cemented together.
3. The breaking down of rocks into smaller pieces through weathering.
4. The process by which sediment settles out of water or air.
5. Sedimentary rock formed from compacted clay and silt.
7. A light, porous igneous rock that can float on water.
8. A sedimentary rock made from compacted plant material over millions of years.
14. A type of rock that forms when particles settle in water and are compacted.
15. Fine-grained metamorphic rock used for roofing.