Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 734 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change lots at once (d) change only one thing
5. 5.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 130 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) read the challenge rules
8. 8.🧪 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 A (b) design B (c) design C
9. 9.True or false: to test it only once is good testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) change lots at once
11. 11.True or false: to use the same load is good testing. (a) False (b) True
12. 12.True or false: to repeat each test is good testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.True or false: to hide a failed test is poor testing. (a) True (b) False
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
20. 20.True or false: to measure the same way is good testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
22. 22.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) change only one thing (d) repeat each test
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 320 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) use the same load
26. 26.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) measure the same way (d) use a new load each time
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) use the same load
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) test it only once (d) change only one thing
34. 34.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) record every result (d) test it only once
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
37. 37.True or false: to guess, do not measure is good testing. (a) False (b) True
38. 38.🔢 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
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 160 g. What is the mean (average) load it held, in grams?

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