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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 707 · 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.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
  2. 2.True or false: to test it only once is good testing. (a) False (b) True
  3. 3.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
  4. 4.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
  5. 5.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
  6. 6.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
  7. 7.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 200 g. What is the mean (average) load it held, in grams?
  8. 8.True or false: to skip writing results is poor testing. (a) True (b) False
  9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
  10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
  11. 11.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) change lots at once
  12. 12.True or false: to guess, do not measure is good testing. (a) True (b) False
  13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
  14. 14.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
  15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
  16. 16.🔢 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
  17. 17.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
  18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
  19. 19.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) use a new load each time
  20. 20.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 160 g. What is the mean (average) load it held, in grams?
  21. 21.True or false: to record every result is poor testing. (a) False (b) True
  22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
  23. 23.True or false: to use the same load is good testing. (a) True (b) False
  24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
  25. 25.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
  26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) guess, do not measure
  27. 27.True or false: to record every result is good testing. (a) True (b) False
  28. 28.True or false: to measure the same way is good testing. (a) True (b) False
  29. 29.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
  30. 30.True or false: to use the same load is poor testing. (a) True (b) False
  31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
  32. 32.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
  33. 33.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) skip writing results (d) use the same load
  34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
  35. 35.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
  36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
  37. 37.True or false: to use a new load each time is poor testing. (a) True (b) False
  38. 38.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
  39. 39.True or false: to change only one thing is good testing. (a) False (b) True
  40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

Answer key

  1. good testing
  2. False
  3. 120
  4. 80
  5. 270
  6. 180
  7. 270
  8. True
  9. design A
  10. strengthen the weak part
  11. change lots at once
  12. False
  13. good testing
  14. 60
  15. to get reliable results
  16. read the challenge rules
  17. an early test model
  18. choose and draw one
  19. use a new load each time
  20. 160
  21. False
  22. design A
  23. True
  24. 80
  25. one
  26. repeat each test
  27. True
  28. True
  29. to test ideas cheaply
  30. False
  31. poor testing
  32. poor testing
  33. skip writing results
  34. poor testing
  35. 190
  36. read the challenge rules
  37. True
  38. 200
  39. True
  40. poor testing

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