natural resources
Across
- 3. a metamorphic rock: this can be split into layers and used as a roofing material
- 4. used to help dyes stick to fabric
- 6. a renewable source of fuel oil
- 7. the “building blocks” of rocks
- 8. a porous sedimentary rock used on SLATE
- 12. a sedimentary rock found around the lothians: that is easy to cut into blocks
- 13. used to extract some metals from their ores
- 14. technique used to extract essential oils
- 16. older dyes were extracted from these
- 18. the amount of this in soil decreases as it is warmed up
- 19. a rock with a lot of a metal in it
- 20. types of metals that can only be extracted using electricity
- 21. a fertile soil of clay and sand containing organic matter
- 22. an essential oil in citrus fruits
Down
- 1. a metal that can be extracted from its ore by heat alone
- 2. a purple flower which is commonly used for extracting essential oils
- 5. oils that give plants their fragrance
- 6. these are smaller in igneous rocks that cooled more quickly
- 8. used to extract some metals from their ores
- 9. is much better than water at dissolving oils
- 10. rocks formed from grains of other rocks
- 11. Rocks that have been changed from one type to another by heat
- 12. type of dyes that have brighter colours than natural ones
- 15. rocks formed from magma
- 17. a bit of this helps water drain from soil