Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 862 · 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 decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
3. 3.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
4. 4.True or false: to guess, do not measure is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
8. 8.🧪 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 weakest? (a) design A (b) design C (c) design B
9. 9.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) record every result (d) repeat each test
10. 10.True or false: to repeat each test is good testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) skip writing results
12. 12.True or false: to test it only once is poor testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) test it only once (d) use the same load
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
16. 16.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to use a new load each time is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 340 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 170 g, 90 g and 250 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
30. 30.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.True or false: to test it only once is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) measure the same way
34. 34.🧪 The first prototype held 70 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 guess, do not measure is good testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) record every result (d) test it only once
37. 37.True or false: to use the same load is poor testing. (a) False (b) True
38. 38.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 250 g, 60 g and 140 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one

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