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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 656 · 40 questions
TalentJR

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

NameDateTime takenScore ___ / 40
  1. 1.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
  2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
  3. 3.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
  4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
  5. 5.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
  6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
  7. 7.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
  8. 8.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) hide a failed test (d) test it only once
  9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
  10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
  11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
  12. 12.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 370 g. What is the mean (average) load it held, in grams?
  13. 13.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use a new load each time (d) repeat each test
  14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
  15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
  16. 16.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
  17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
  18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
  19. 19.True or false: to repeat each test is good testing. (a) True (b) False
  20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
  21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
  22. 22.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
  23. 23.True or false: to use the same load is poor testing. (a) True (b) False
  24. 24.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
  25. 25.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change lots at once (d) repeat each test
  26. 26.True or false: to record every result is poor testing. (a) True (b) False
  27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
  28. 28.True or false: to skip writing results is good testing. (a) True (b) False
  29. 29.True or false: to guess, do not measure is good testing. (a) True (b) False
  30. 30.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
  31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
  32. 32.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 370 g. What is the mean (average) load it held, in grams?
  33. 33.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
  34. 34.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) guess, do not measure (d) test it only once
  35. 35.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) hide a failed test (d) use the same load
  36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) measure the same way (d) change lots at once
  37. 37.True or false: to guess, do not measure is poor testing. (a) False (b) True
  38. 38.True or false: to test it only once is poor testing. (a) True (b) False
  39. 39.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
  40. 40.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?

Answer key

  1. an early test model
  2. poor testing
  3. 150
  4. False
  5. 170
  6. strengthen the weak part
  7. 200
  8. repeat each test
  9. 200
  10. poor testing
  11. 170
  12. 300
  13. use a new load each time
  14. sketch three ideas
  15. design B
  16. to test ideas cheaply
  17. poor testing
  18. one
  19. True
  20. poor testing
  21. read the challenge rules
  22. 160
  23. False
  24. poor testing
  25. change lots at once
  26. False
  27. design C
  28. False
  29. False
  30. 300
  31. sketch three ideas
  32. 350
  33. good testing
  34. change only one thing
  35. use the same load
  36. measure the same way
  37. True
  38. True
  39. good testing
  40. 50

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