Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 620 · 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 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) change only one thing (d) use the same load
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) use the same load
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
7. 7.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) change lots at once
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) measure the same way (d) record every result
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
13. 13.🔍 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
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 410 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
16. 16.🧪 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
17. 17.🧪 A paper bridge was tested three times. It held 200 g, 190 g and 180 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to hide a failed test is poor testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 390 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to repeat each test is good testing. (a) True (b) False
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use a new load each time (d) measure the same way
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🧪 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
27. 27.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) change only one thing
28. 28.True or false: to measure the same way is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
30. 30.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
32. 32.True or false: to change lots at once is good testing. (a) False (b) True
33. 33.True or false: to use a new load each time is poor testing. (a) False (b) True
34. 34.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) change only one thing
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 70 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
39. 39.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
40. 40.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?

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