Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 830 · 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.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) record every result
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 160 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) use a new load each time (d) test it only once
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
9. 9.True or false: to test it only once is good testing. (a) True (b) False
10. 10.True or false: to skip writing results is good testing. (a) True (b) False
11. 11.True or false: to guess, do not measure is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) change lots at once
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
17. 17.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) guess, do not measure (d) change lots at once
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🔢 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
22. 22.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use a new load each time (d) measure the same way
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.True or false: to guess, do not measure is good testing. (a) True (b) False
25. 25.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.True or false: to use the same load is poor testing. (a) False (b) True
28. 28.True or false: to hide a failed test is poor testing. (a) False (b) True
29. 29.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
30. 30.True or false: to record every result is good testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 390 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to measure the same way is poor testing. (a) False (b) True
34. 34.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
35. 35.True or false: to change lots at once is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
37. 37.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
38. 38.True or false: to change only one thing is good testing. (a) True (b) False
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

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