← Prototypes and fair tests lesson New set →

Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 367 · 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.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
  2. 2.True or false: to change lots at once is poor testing. (a) True (b) False
  3. 3.True or false: to record every result is good testing. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) hide a failed test (d) skip writing results
  5. 5.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
  6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design C (b) design B (c) design A
  7. 7.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
  8. 8.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
  9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
  10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
  11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
  12. 12.True or false: to use a new load each time is good testing. (a) False (b) True
  13. 13.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) record every result
  14. 14.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
  15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
  16. 16.True or false: to repeat each test is good testing. (a) False (b) True
  17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
  18. 18.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
  19. 19.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) skip writing results (d) measure the same way
  20. 20.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 370 g. What is the mean (average) load it held, in grams?
  21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
  22. 22.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) read the challenge rules
  23. 23.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
  24. 24.True or false: to use the same load is good testing. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) use the same load
  26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
  27. 27.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
  28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
  29. 29.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
  30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
  31. 31.🧪 A paper bridge was tested three times. It held 170 g, 50 g and 230 g. What is the mean (average) load it held, in grams?
  32. 32.True or false: to use the same load is poor testing. (a) True (b) False
  33. 33.True or false: to change only one thing is good testing. (a) True (b) False
  34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
  35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
  36. 36.True or false: to hide a failed test is good testing. (a) True (b) False
  37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
  38. 38.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
  39. 39.True or false: to use a new load each time is poor testing. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) hide a failed test

Answer key

  1. one
  2. True
  3. True
  4. repeat each test
  5. to get reliable results
  6. design C
  7. 140
  8. an early test model
  9. read the challenge rules
  10. strengthen the weak part
  11. True
  12. False
  13. record every result
  14. 20
  15. 30
  16. True
  17. poor testing
  18. poor testing
  19. skip writing results
  20. 350
  21. good testing
  22. load it with coins
  23. 310
  24. True
  25. use a new load each time
  26. poor testing
  27. 70
  28. design B
  29. poor testing
  30. poor testing
  31. 150
  32. False
  33. True
  34. False
  35. sketch three ideas
  36. False
  37. sketch three ideas
  38. 290
  39. True
  40. use the same load

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids