Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 424 · 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.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
3. 3.True or false: to skip writing results is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.True or false: to hide a failed test is poor testing. (a) False (b) True
7. 7.True or false: to guess, do not measure is good testing. (a) True (b) False
8. 8.True or false: to use the same load is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) skip writing results
12. 12.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
13. 13.🧪 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 strongest? (a) design A (b) design C (c) design B
14. 14.True or false: to change lots at once is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) test it only once (d) repeat each test
18. 18.True or false: to record every result is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
20. 20.True or false: to use the same load is poor testing. (a) False (b) True
21. 21.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
22. 22.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
23. 23.True or false: to repeat each test is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
25. 25.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) hide a failed test (d) use the same load
27. 27.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 170 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 A (b) design C (c) design B
30. 30.True or false: to use a new load each time is good testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
33. 33.True or false: to use a new load each time is poor testing. (a) False (b) True
34. 34.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) use a new load each time
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) sketch three ideas

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