Iggy Puzzle

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