Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 624 · 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 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) test it only once (d) repeat each test
4. 4.True or false: to skip writing results is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) read the challenge rules
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) repeat each test (d) use the same load
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to hide a failed test is poor testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
13. 13.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change lots at once is good testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) use a new load each time (d) guess, do not measure
21. 21.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 330 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 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
25. 25.True or false: to use a new load each time is poor testing. (a) False (b) True
26. 26.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) change only one thing
28. 28.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) change only one thing
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) use the same load
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
32. 32.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
33. 33.True or false: to measure the same way is good testing. (a) True (b) False
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
36. 36.True or false: to repeat each test is good testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) guess, do not measure
38. 38.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) hide a failed test (d) use the same load
39. 39.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A

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