Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 60 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
4. 4.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to record every result is poor testing. (a) True (b) False
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 290 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
11. 11.True or false: to change only one thing is poor testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.True or false: to use a new load each time is good testing. (a) True (b) False
14. 14.True or false: to measure the same way is poor testing. (a) False (b) True
15. 15.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to guess, do not measure is poor testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) use the same load
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
20. 20.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) skip writing results
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
23. 23.True or false: to hide a failed test is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) measure the same way (d) hide a failed test
29. 29.True or false: to change lots at once is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change lots at once (d) use a new load each time
32. 32.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
34. 34.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
36. 36.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
37. 37.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) test it only once
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) repeat each test
40. 40.True or false: to skip writing results is good testing. (a) True (b) False

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