Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 428 · 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 is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change only one thing (d) use the same load
3. 3.True or false: to repeat each test is poor testing. (a) True (b) False
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) skip writing results
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
8. 8.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
11. 11.🧪 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 strongest? (a) design B (b) design A (c) design C
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) test it only once
13. 13.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) change lots at once
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) skip writing results
18. 18.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) guess, do not measure (d) skip writing results
19. 19.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
20. 20.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
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 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
24. 24.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.True or false: to use the same load is poor testing. (a) True (b) False
27. 27.True or false: to repeat each test is good testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) change only one thing
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 120 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 230 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
34. 34.True or false: to use the same load is good testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.True or false: to use a new load each time is poor testing. (a) True (b) False
40. 40.True or false: to change lots at once is poor testing. (a) True (b) False

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