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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 805 · 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.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
  2. 2.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
  3. 3.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
  4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
  5. 5.True or false: to use the same load is good testing. (a) False (b) True
  6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
  7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
  8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
  9. 9.True or false: to change lots at once is good testing. (a) True (b) False
  10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
  11. 11.True or false: to record every result is good testing. (a) True (b) False
  12. 12.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
  13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
  14. 14.🧪 A paper bridge was tested three times. It held 190 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
  15. 15.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) test it only once (d) change only one thing
  16. 16.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
  17. 17.True or false: to change only one thing is good testing. (a) True (b) False
  18. 18.🧪 A paper bridge was tested three times. It held 300 g, 210 g and 390 g. What is the mean (average) load it held, in grams?
  19. 19.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
  20. 20.True or false: to test it only once is good testing. (a) True (b) False
  21. 21.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
  22. 22.🧪 A paper bridge was tested three times. It held 150 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
  23. 23.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
  24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
  25. 25.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
  26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) record every result (d) skip writing results
  27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
  28. 28.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
  29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
  30. 30.True or false: to use a new load each time is good testing. (a) True (b) False
  31. 31.True or false: to measure the same way is good testing. (a) False (b) True
  32. 32.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
  33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
  34. 34.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
  35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) build it with straws
  36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
  37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
  38. 38.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
  39. 39.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
  40. 40.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing

Answer key

  1. 50
  2. to get reliable results
  3. 220
  4. poor testing
  5. True
  6. to test ideas cheaply
  7. poor testing
  8. read the challenge rules
  9. False
  10. False
  11. True
  12. 130
  13. good testing
  14. 180
  15. test it only once
  16. good testing
  17. True
  18. 300
  19. 80
  20. False
  21. 210
  22. 150
  23. 140
  24. poor testing
  25. one
  26. record every result
  27. design C
  28. poor testing
  29. design C
  30. False
  31. True
  32. 90
  33. good testing
  34. an early test model
  35. choose and draw one
  36. False
  37. strengthen the weak part
  38. 30
  39. 230
  40. poor testing

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