science

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Across
  1. 1. is used to remove dead skin cells due to its rough surface
  2. 3. miners would often confuse gold with pyrite, also called ____ gold.
  3. 5. is a measure of how well a mineral resists scratching
  4. 8. if sediementary and igenous rocks are put under heat and _____, the shape or the size of the crystals within them can change
  5. 9. is a common intrusive rock
  6. 10. on ___' hardness scale, minerals are ranked from 1 to 10.
  7. 11. an igenous rock that forms from lava on Earth's surface is called an ____ rock
  8. 15. is the way a mineral reflects light from its surface
  9. 17. is an example of a mineral with a monoclinic structure
  10. 18. obsidian is an example of an extrusive rock that has no ____.
  11. 19. ground _____ is an ingredient in concrete
  12. 21. Iron is found in the rock ___.
  13. 22. The three types of rock are: ____, igneous, and metamorphic
  14. 25. in India was built using white marble
  15. 26. is a mineral that is rare, beautiful, usually transparent, and glitters or shines in light
Down
  1. 2. is a solid whose shape forms a fixed pattern
  2. 4. Topaz is an example of a mineral with an _____ structure
  3. 6. rocks are made of different materials that have been compacted and cemented together
  4. 7. is a more compact rock than limestone, with crystals that are locked together like pieces of a jigsaw puzzle
  5. 12. a pure substance that cannot be broken down into a simpler substance
  6. 13. is the property a mineral shows when it has uneven or rough surfaces
  7. 14. is described by the number of planes along with the mineral breaks
  8. 16. gems may be used in _____.
  9. 20. when an igneous rock forms from magma inside Earth, it is called a ____ rock.
  10. 22. is the color of the powder left when the mineral is rubbed on a rough surface
  11. 23. is a shiny metamorphic rock that contains minerals that give it brilliant colors
  12. 24. is an example of a mineral with a hexagonal structure