😁 crossword 😁

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