Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 349 · 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) True (b) False
2. 2.True or false: to change lots at once is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) test it only once
4. 4.🧪 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 strongest? (a) design A (b) design B (c) design C
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 360 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to repeat each test is good testing. (a) False (b) True
7. 7.True or false: to guess, do not measure is poor testing. (a) False (b) True
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) measure the same way (d) record every result
10. 10.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) hide a failed test (d) use a new load each time
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
21. 21.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) skip writing results
25. 25.True or false: to test it only once is good testing. (a) False (b) True
26. 26.🔢 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
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.True or false: to measure the same way is poor testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change lots at once (d) record every result
35. 35.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
37. 37.🧪 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 weakest? (a) design A (b) design B (c) design C
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part

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