Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 948 · 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: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design C (b) design B (c) design A
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) build it with straws
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) build it with straws
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🧪 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
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) change lots at once
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
10. 10.🧪 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 B (b) design C (c) design A
11. 11.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) test it only once
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) skip writing results (d) use the same load
15. 15.True or false: to change only one thing is poor testing. (a) True (b) False
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) skip writing results (d) guess, do not measure
21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) hide a failed test (d) record every result
23. 23.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) repeat each test
28. 28.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.True or false: to repeat each test is good testing. (a) True (b) False
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) repeat each test
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) hide a failed test

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