Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 716 · 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.True or false: to skip writing results is poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to use a new load each time is poor testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 370 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change lots at once (d) hide a failed test
6. 6.🧪 A paper bridge was tested three times. It held 430 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) use the same load (d) measure the same way
14. 14.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) use the same load
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) sketch three ideas
16. 16.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
17. 17.True or false: to hide a failed test is poor testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) change only one thing
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
23. 23.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
24. 24.True or false: to repeat each test is good testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
26. 26.🔢 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
27. 27.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) guess, do not measure
28. 28.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
29. 29.🧪 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
30. 30.🧪 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 strongest? (a) design B (b) design C (c) design A
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.True or false: to use the same load is poor testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) hide a failed test
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
35. 35.True or false: to repeat each test is poor testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
37. 37.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
38. 38.True or false: to use the same load is good testing. (a) False (b) True
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas

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