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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 529 · 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.True or false: to change lots at once is good testing. (a) True (b) False
  2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
  3. 3.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
  4. 4.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
  5. 5.True or false: to change lots at once is poor testing. (a) False (b) True
  6. 6.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) record every result (d) measure the same way
  7. 7.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
  8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
  9. 9.🧪 A paper bridge was tested three times. It held 330 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
  10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
  11. 11.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
  12. 12.True or false: to repeat each test is poor testing. (a) True (b) False
  13. 13.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
  14. 14.True or false: to repeat each test is good testing. (a) True (b) False
  15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
  16. 16.True or false: to change only one thing is good testing. (a) True (b) False
  17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
  18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
  19. 19.True or false: to use the same load is good testing. (a) False (b) True
  20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
  21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
  22. 22.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
  23. 23.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
  24. 24.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use a new load each time (d) change only one thing
  25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design C (b) design A (c) design B
  26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
  27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) guess, do not measure (d) change lots at once
  28. 28.True or false: to record every result is poor testing. (a) True (b) False
  29. 29.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
  30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
  31. 31.True or false: to use a new load each time is poor testing. (a) False (b) True
  32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
  33. 33.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 80 g. What is the mean (average) load it held, in grams?
  34. 34.True or false: to use a new load each time is good testing. (a) True (b) False
  35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
  36. 36.True or false: to test it only once is good testing. (a) False (b) True
  37. 37.True or false: to skip writing results is good testing. (a) True (b) False
  38. 38.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
  39. 39.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 340 g. What is the mean (average) load it held, in grams?
  40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules

Answer key

  1. False
  2. one
  3. 320
  4. to test ideas cheaply
  5. True
  6. change lots at once
  7. 10
  8. read the challenge rules
  9. 320
  10. good testing
  11. 110
  12. False
  13. to get reliable results
  14. True
  15. 180
  16. True
  17. poor testing
  18. True
  19. True
  20. read the challenge rules
  21. poor testing
  22. 110
  23. poor testing
  24. change only one thing
  25. design A
  26. poor testing
  27. record every result
  28. False
  29. an early test model
  30. choose and draw one
  31. True
  32. sketch three ideas
  33. 150
  34. False
  35. design C
  36. False
  37. False
  38. 200
  39. 320
  40. read the challenge rules

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