Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 657 · 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.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
2. 2.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) record every result (d) test it only once
4. 4.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
5. 5.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
6. 6.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) repeat each test (d) change lots at once
9. 9.🔢 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
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
13. 13.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) measure the same way (d) change only one thing
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change only one thing (d) hide a failed test
16. 16.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) change only one thing
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) change only one thing
18. 18.🔢 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
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) guess, do not measure (d) test it only once
20. 20.True or false: to change lots at once is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
24. 24.True or false: to guess, do not measure is poor testing. (a) False (b) True
25. 25.True or false: to use the same load is poor testing. (a) False (b) True
26. 26.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) guess, do not measure (d) record every result
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.True or false: to hide a failed test is good testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
35. 35.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
36. 36.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 140 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) skip writing results

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