Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 880 · 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.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) change only one thing (d) repeat each test
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
7. 7.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.True or false: to use a new load each time is good testing. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) repeat each test (d) test it only once
10. 10.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
13. 13.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) hide a failed test
14. 14.True or false: to change lots at once is poor testing. (a) False (b) True
15. 15.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) skip writing results (d) test it only once
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
18. 18.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) repeat each test
19. 19.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
24. 24.True or false: to hide a failed test is good testing. (a) True (b) False
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) record every result (d) test it only once
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
28. 28.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
29. 29.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
30. 30.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.🔢 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) read the challenge rules (d) load it with coins
32. 32.True or false: to use a new load each time is poor testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
36. 36.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) measure the same way (d) record every result
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 180 g. What is the mean (average) load it held, in grams?

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