Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 244 · 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) use a new load each time (b) hide a failed test (c) repeat each test (d) skip writing results
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) use the same load
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.True or false: to use the same load is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use a new load each time (d) change only one thing
12. 12.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) use a new load each time
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
22. 22.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
25. 25.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change only one thing (d) test it only once
27. 27.True or false: to record every result is good testing. (a) True (b) False
28. 28.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
30. 30.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.True or false: to record every result is poor testing. (a) False (b) True
33. 33.True or false: to repeat each test is poor testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
36. 36.True or false: to use a new load each time is poor testing. (a) True (b) False
37. 37.True or false: to hide a failed test is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 80 g and 140 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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