Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 25 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
2. 2.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) repeat each test (d) test it only once
5. 5.True or false: to measure the same way is good testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.🧪 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 B (c) design C
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) measure the same way (d) record every result
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) use a new load each time (d) skip writing results
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) hide a failed test (d) use a new load each time
16. 16.True or false: to guess, do not measure is poor testing. (a) True (b) False
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 300 g, 280 g and 320 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) skip writing results (d) hide a failed test
22. 22.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
23. 23.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
25. 25.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.True or false: to use a new load each time is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
32. 32.True or false: to skip writing results is poor testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🧪 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
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use a new load each time (d) record every result
37. 37.True or false: to hide a failed test is good testing. (a) False (b) True
38. 38.True or false: to skip writing results is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) test it only once

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