Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 189 · 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.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) skip writing results (d) measure the same way
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
8. 8.True or false: to measure the same way is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.True or false: to record every result is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
15. 15.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) change lots at once (d) guess, do not measure
17. 17.True or false: to record every result is poor testing. (a) True (b) False
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
20. 20.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.True or false: to use the same load is good testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) change only one thing (d) record every result
26. 26.True or false: to skip writing results is poor testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
28. 28.True or false: to hide a failed test is poor testing. (a) True (b) False
29. 29.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
30. 30.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) test it only once (d) guess, do not measure
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) repeat each test
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
33. 33.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) use a new load each time
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) skip writing results (d) repeat each test
35. 35.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
36. 36.🔢 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
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
38. 38.True or false: to test it only once is good testing. (a) True (b) False
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.True or false: to change only one thing is good testing. (a) False (b) True

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