Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 364 · 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 test it only once? (a) good testing (b) poor testing
2. 2.True or false: to repeat each test is poor testing. (a) True (b) False
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
5. 5.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) change only one thing
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) choose and draw one
9. 9.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
10. 10.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 120 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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 strongest? (a) design A (b) design C (c) design B
13. 13.True or false: to hide a failed test is good testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
17. 17.True or false: to change lots at once is poor testing. (a) False (b) True
18. 18.True or false: to test it only once is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
24. 24.True or false: to use the same load is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.True or false: to guess, do not measure is good testing. (a) True (b) False
27. 27.True or false: to use a new load each time is good testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) hide a failed test (d) use a new load each time
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
32. 32.True or false: to record every result is good testing. (a) False (b) True
33. 33.True or false: to measure the same way is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
36. 36.True or false: to repeat each test is good testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🔢 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) build it with straws (d) strengthen the weak part

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