Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 408 · 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.True or false: to hide a failed test is poor testing. (a) True (b) False
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
3. 3.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 350 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use a new load each time (d) skip writing results
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) repeat each test (d) test it only once
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.True or false: to change lots at once is good testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) repeat each test (d) use the same load
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) record every result (d) test it only once
16. 16.True or false: to test it only once is good testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
21. 21.🧪 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 C (b) design B (c) design A
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) use the same load
28. 28.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.True or false: to use the same load is poor testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.🔢 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
34. 34.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 410 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.True or false: to change only one thing is poor testing. (a) True (b) False

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