Across
- 6. A break in a rock sequence
- 7. Biggest of the three components that make soil
- 9. the place where sandstone forms
- 12. a natural element containing organic matter
- 15. layers of rocks
- 16. a type of index fossil
- 18. A way to tell how old a sedimentary rock layer is
- 21. topmost layer of soil, best soil for farming
- 23. an igneous rock; commonly used on countertops
- 24. contains natural materials, dead stuff
Down
- 1. when heated materials rise and cooler materials sink, creating a continuous movement
- 2. this rock floats on water
- 3. an animal's bones preserved in sedimentary rocks
- 4. rock that forms from packing of sediments under pressure
- 5. igneous rock that forms inside volcanoes
- 8. a metamorphic rock used in sculptures, flooring, furniture
- 10. soil layers
- 11. igneous rock that forms outside of volcanoes
- 13. Most common rock on Earth
- 14. type of rock that forms under intense heat and pressure
- 17. process of liquid passing through a filter
- 19. middle biggest of the components that make up soil
- 20. smallest of the components that make up soil
- 22. a natural igneous glass