Lesson 29,30 Crossword Test

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Across
  1. 3. adjustable gap that controls how much light goes through
  2. 4. a cut piece of glass that separates light
  3. 5. trading without currency
  4. 6. a part of a larger whole
  5. 8. a good of materials in stock
  6. 10. working parts of a machine
  7. 13. creates electricity from mechanical energy
  8. 15. a list of items and descriptions
  9. 19. selling an established product
  10. 20. specific tool for something or an activity
Down
  1. 1. trading/buying in large amounts
  2. 2. uncompleted work or orders
  3. 7. combination of two companies
  4. 9. people or companies that sell products
  5. 11. complete control over a service
  6. 12. a machine that separates different materials by spinning it very fast
  7. 14. an intense beam of light produced by a electronic device
  8. 16. a measuring tool
  9. 17. a rise in prices in an economy
  10. 18. a supporter or customer