Sigma Preston

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