Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 836 · 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 record every result? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
3. 3.True or false: to measure the same way is good testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 200 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) change only one thing
8. 8.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
9. 9.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) use a new load each time (d) repeat each test
10. 10.True or false: to change lots at once is poor testing. (a) False (b) True
11. 11.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.True or false: to repeat each test is poor testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
17. 17.True or false: to use the same load is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
19. 19.True or false: to hide a failed test is poor testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
21. 21.True or false: to record every result is poor testing. (a) True (b) False
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) change lots at once
24. 24.True or false: to skip writing results is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) hide a failed test
26. 26.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.True or false: to change lots at once is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) skip writing results (d) measure the same way
33. 33.True or false: to test it only once is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) repeat each test
36. 36.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use a new load each time is good testing. (a) False (b) True
38. 38.True or false: to record every result is good testing. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) guess, do not measure (d) use a new load each time
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) choose and draw one

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