Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 480 · 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 change lots at once is good testing. (a) True (b) False
2. 2.True or false: to guess, do not measure is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use the same load (d) change lots at once
5. 5.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) test it only once
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
9. 9.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) guess, do not measure (d) hide a failed test
10. 10.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.True or false: to skip writing results is good testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 380 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) True (b) False
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 350 g and 330 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) record every result (d) change lots at once
20. 20.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
30. 30.🧪 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
31. 31.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 270 g. What is the mean (average) load it held, in grams?
32. 32.🔢 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
33. 33.True or false: to repeat each test is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) change only one thing (d) repeat each test
37. 37.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) record every result
39. 39.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) hide a failed test
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one

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