Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 242 · 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) test it only once (b) record every result (c) change lots at once (d) guess, do not measure
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change only one thing (d) measure the same way
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) change lots at once
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 360 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 230 g. What is the mean (average) load it held, in grams?
14. 14.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
15. 15.True or false: to record every result is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) record every result
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
20. 20.🧪 A paper bridge was tested three times. It held 210 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
25. 25.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 80 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change lots at once is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to hide a failed test is poor testing. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
40. 40.True or false: to guess, do not measure is good testing. (a) False (b) True

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