Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 705 · 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 good testing. (a) False (b) True
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) use the same load
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) choose and draw one
8. 8.True or false: to measure the same way is poor testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) guess, do not measure (d) test it only once
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
14. 14.True or false: to change only one thing is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
17. 17.True or false: to hide a failed test is poor testing. (a) True (b) False
18. 18.True or false: to record every result is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) record every result
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use the same load is good testing. (a) False (b) True
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design A (b) design C (c) design B
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) test it only once (d) use the same load
31. 31.🧪 A paper bridge was tested three times. It held 350 g, 340 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.True or false: to use a new load each time is good testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.True or false: to repeat each test is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 400 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to measure the same way is good testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) record every result (d) hide a failed test

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