Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 426 · 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) repeat each test (b) use a new load each time (c) measure the same way (d) change only one thing
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) hide a failed test (d) measure the same way
3. 3.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to hide a failed test is poor testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
6. 6.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) use the same load (d) hide a failed test
7. 7.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
8. 8.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
10. 10.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) sketch three ideas
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to measure the same way is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
16. 16.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) record every result
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) test it only once (d) repeat each test
19. 19.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
22. 22.🧪 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
23. 23.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
27. 27.🔢 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
28. 28.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
29. 29.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 370 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to measure the same way is good testing. (a) False (b) True
31. 31.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) test it only once
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
37. 37.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
40. 40.🧪 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 C (b) design A (c) design B

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