Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 314 · 40 questions

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.

1. 1.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use a new load each time (d) repeat each test
2. 2.True or false: to measure the same way is good testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) guess, do not measure (d) skip writing results
4. 4.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
6. 6.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
8. 8.True or false: to skip writing results is good testing. (a) True (b) False
9. 9.True or false: to change only one thing is poor testing. (a) False (b) True
10. 10.True or false: to hide a failed test is poor testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) record every result (d) use a new load each time
14. 14.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) guess, do not measure
16. 16.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to use a new load each time is poor testing. (a) True (b) False
18. 18.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.True or false: to change only one thing is good testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) hide a failed test (d) change only one thing
23. 23.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) repeat each test
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
28. 28.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 220 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.True or false: to repeat each test is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.True or false: to guess, do not measure is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 160 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) use the same load
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) repeat each test (d) record every result

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