Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 444 · 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.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to measure the same way is good testing. (a) False (b) True
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) repeat each test
5. 5.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
8. 8.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) choose and draw one
11. 11.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) use the same load (d) measure the same way
16. 16.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) change only one thing (d) repeat each test
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) hide a failed test (d) change lots at once
24. 24.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use a new load each time (d) record every result
27. 27.True or false: to hide a failed test is good testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use the same load (d) guess, do not measure
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) skip writing results (d) test it only once
31. 31.True or false: to change only one thing is poor testing. (a) False (b) True
32. 32.True or false: to use the same load is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to record every result is poor testing. (a) True (b) False
36. 36.True or false: to use a new load each time is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 410 g. What is the mean (average) load it held, in grams?
39. 39.🧪 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
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 370 g. What is the mean (average) load it held, in grams?

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