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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 642 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design A (b) design C (c) design B
  2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) choose and draw one
  3. 3.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
  4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
  5. 5.True or false: to change only one thing is good testing. (a) True (b) False
  6. 6.True or false: to repeat each test is good testing. (a) False (b) True
  7. 7.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
  8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
  9. 9.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) guess, do not measure (d) skip writing results
  10. 10.True or false: to use the same load is good testing. (a) False (b) True
  11. 11.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
  12. 12.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 280 g. What is the mean (average) load it held, in grams?
  13. 13.True or false: to hide a failed test is poor testing. (a) True (b) False
  14. 14.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
  15. 15.True or false: to change lots at once is poor testing. (a) False (b) True
  16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
  17. 17.True or false: to skip writing results is poor testing. (a) False (b) True
  18. 18.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
  19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
  20. 20.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) skip writing results (d) guess, do not measure
  21. 21.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
  22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
  23. 23.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
  24. 24.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 380 g. What is the mean (average) load it held, in grams?
  25. 25.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
  26. 26.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
  27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
  28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
  29. 29.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
  30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
  31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
  32. 32.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 110 g. What is the mean (average) load it held, in grams?
  33. 33.True or false: to test it only once is poor testing. (a) True (b) False
  34. 34.True or false: to hide a failed test is good testing. (a) True (b) False
  35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
  36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) test it only once
  38. 38.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
  39. 39.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
  40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A

Answer key

  1. design A
  2. strengthen the weak part
  3. good testing
  4. choose and draw one
  5. True
  6. True
  7. choose and draw one
  8. good testing
  9. repeat each test
  10. True
  11. 230
  12. 320
  13. True
  14. 180
  15. True
  16. poor testing
  17. True
  18. 50
  19. 10
  20. change only one thing
  21. 210
  22. good testing
  23. 90
  24. 340
  25. an early test model
  26. 160
  27. poor testing
  28. True
  29. 30
  30. strengthen the weak part
  31. read the challenge rules
  32. 190
  33. True
  34. False
  35. read the challenge rules
  36. False
  37. test it only once
  38. poor testing
  39. 50
  40. design C

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