Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 348 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
2. 2.True or false: to change lots at once is poor testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) record every result (d) use the same load
4. 4.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 390 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
9. 9.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) choose and draw one
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) choose and draw one
19. 19.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 380 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use a new load each time (d) use the same load
22. 22.🔢 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
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design A (b) design B (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 140 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
28. 28.True or false: to use a new load each time is good testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
31. 31.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
33. 33.True or false: to record every result is poor testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) measure the same way
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to hide a failed test is poor testing. (a) True (b) False
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 290 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) repeat each test (d) change lots at once

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