Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 610 · 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) change only one thing (b) test it only once (c) change lots at once (d) hide a failed test
2. 2.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
3. 3.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
4. 4.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change lots at once (d) repeat each test
5. 5.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design C (b) design A (c) design B
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.True or false: to skip writing results is poor testing. (a) False (b) True
9. 9.🧪 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 strongest? (a) design C (b) design A (c) design B
10. 10.True or false: to hide a failed test is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) repeat each test (d) record every result
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) sketch three ideas
21. 21.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
22. 22.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
24. 24.True or false: to change lots at once is poor testing. (a) True (b) False
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
31. 31.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.True or false: to guess, do not measure is poor testing. (a) True (b) False
35. 35.True or false: to record every result is poor testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 230 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to guess, do not measure is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C

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