Maddie V Puzzle 1

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Across
  1. 3. ___ oxide is also a glass former
  2. 6. have the effect of bringing down the melting temperature
  3. 8. main component of clay
  4. 9. the quality of clay that allows it to move while maintaining its shape
  5. 11. what do you use to "paint" your project
  6. 14. the art of making things out of clay
  7. 16. what percent of the earth's crust is silica
  8. 17. where does clay come from
  9. 18. the glassy substance that is most important occurs naturally as ___ rocks
Down
  1. 1. ___ clay that has not been moved from its location
  2. 2. rolling out wet clay into rope pieces
  3. 3. ___ clay can shrink up to 25%
  4. 4. highly plastic secondary formed volcanic ash
  5. 5. ___ clay is the purest of primary clays
  6. 7. ___ clay used for making drain pipes and brick
  7. 10. clay is a combination of how many things
  8. 11. what does silica form
  9. 12. ___ clay that has been transported from the original location
  10. 13. what you use for your "glue" in your project
  11. 15. what is the formula for silicon dioxide