nora's engineering vocabulary crossword puzzle :D

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Across
  1. 1. the process for devising structures or systems to meet specific needs
  2. 3. the variables that are kept the same in a fair test
  3. 5. an early model of a design
  4. 8. a person with scientific training who designs structures and systems to address specific needs
  5. 9. the variables that is observed or measured in a fair test; result
  6. 10. scientific principles for designing and building structures and systems to address specific needs
  7. 11. limitation
  8. 13. to suggest and discuss ideas for solving a problem
  9. 15. something that can be changed, controlled, or measured
Down
  1. 2. a series of flexible steps that move an engineer from problem to solution
  2. 4. the use of scientific knowledge to solve problems
  3. 6. with a design that need improvement
  4. 7. the variable that is changed in a fair test
  5. 12. standards by which something is judged
  6. 14. an investigation in which one variable is changed and all other variables are kept the same