Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 192 · 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 comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use a new load each time (d) skip writing results
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
4. 4.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
5. 5.True or false: to change lots at once is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) build it with straws
7. 7.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
8. 8.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) repeat each test (d) guess, do not measure
11. 11.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) change lots at once
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) measure the same way
17. 17.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
18. 18.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
20. 20.True or false: to record every result is poor testing. (a) True (b) False
21. 21.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.True or false: to test it only once is good testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) test it only once (d) measure the same way
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
32. 32.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
33. 33.True or false: to measure the same way is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) use the same load (d) measure the same way
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design C (b) design B (c) design A
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 record every result? (a) good testing (b) poor testing
40. 40.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing

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