Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 228 · 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 measure the same way? (a) good testing (b) poor testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.True or false: to repeat each test is good testing. (a) True (b) False
6. 6.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.True or false: to change lots at once is poor testing. (a) False (b) True
10. 10.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) record every result (d) test it only once
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) test it only once
15. 15.🧪 A paper bridge was tested three times. It held 170 g, 90 g and 220 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.True or false: to skip writing results is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
24. 24.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
25. 25.🔢 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
26. 26.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 230 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
31. 31.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 390 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 220 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use the same load is poor testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) repeat each test

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