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Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 166 · 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 measure the same way is poor testing. (a) False (b) True
  2. 2.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
  3. 3.True or false: to use the same load is good testing. (a) True (b) False
  4. 4.True or false: to test it only once is good testing. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) use a new load each time
  6. 6.True or false: to hide a failed test is good testing. (a) False (b) True
  7. 7.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
  8. 8.True or false: to repeat each test is poor testing. (a) True (b) False
  9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
  10. 10.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
  11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
  12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
  13. 13.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
  14. 14.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) load it with coins (d) read the challenge rules
  15. 15.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
  16. 16.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
  17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
  18. 18.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 370 g. What is the mean (average) load it held, in grams?
  19. 19.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
  20. 20.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
  21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
  22. 22.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
  23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
  24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
  25. 25.True or false: to test it only once is poor testing. (a) True (b) False
  26. 26.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
  27. 27.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
  28. 28.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) change only one thing
  29. 29.🔢 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
  30. 30.True or false: to record every result is poor testing. (a) False (b) True
  31. 31.True or false: to use a new load each time is good testing. (a) True (b) False
  32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
  33. 33.🧪 A paper bridge was tested three times. It held 350 g, 190 g and 210 g. What is the mean (average) load it held, in grams?
  34. 34.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
  35. 35.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
  36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
  37. 37.🧪 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?
  38. 38.True or false: to change only one thing is good testing. (a) False (b) True
  39. 39.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
  40. 40.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 400 g. What is the mean (average) load it held, in grams?

Answer key

  1. False
  2. 330
  3. True
  4. False
  5. use a new load each time
  6. False
  7. poor testing
  8. False
  9. True
  10. 80
  11. one
  12. poor testing
  13. to test ideas cheaply
  14. read the challenge rules
  15. 280
  16. an early test model
  17. strengthen the weak part
  18. 280
  19. good testing
  20. 320
  21. good testing
  22. choose and draw one
  23. sketch three ideas
  24. poor testing
  25. True
  26. 80
  27. good testing
  28. change lots at once
  29. read the challenge rules
  30. False
  31. False
  32. design B
  33. 250
  34. poor testing
  35. good testing
  36. design A
  37. 210
  38. True
  39. good testing
  40. 350

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