Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 92 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.True or false: to use a new load each time is good testing. (a) False (b) True
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 guess, do not measure is poor testing. (a) False (b) True
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🔢 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
10. 10.True or false: to skip writing results is good testing. (a) False (b) True
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) test it only once (d) repeat each test
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) test it only once (d) change only one thing
17. 17.🔢 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
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
19. 19.True or false: to change lots at once is poor testing. (a) True (b) False
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
21. 21.True or false: to test it only once is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 170 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design B (c) design C
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) measure the same way (d) test it only once
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use a new load each time (d) skip writing results
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.True or false: to hide a failed test is poor testing. (a) False (b) True
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
36. 36.🔢 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
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to measure the same way is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 430 g, 230 g and 330 g. What is the mean (average) load it held, in grams?

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