Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 881 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) repeat each test (d) use the same load
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
6. 6.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) use a new load each time (d) repeat each test
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) guess, do not measure
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) change only one thing
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 220 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to change lots at once is good testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) guess, do not measure (d) skip writing results
21. 21.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 370 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) record every result (d) test it only once
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.True or false: to record every result is good testing. (a) False (b) True
27. 27.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
28. 28.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.True or false: to change lots at once is poor testing. (a) False (b) True
32. 32.True or false: to measure the same way is good testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.True or false: to change only one thing is good testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design A (b) design C (c) design B
40. 40.True or false: to skip writing results is poor testing. (a) False (b) True

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