Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 786 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
4. 4.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
8. 8.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.True or false: to guess, do not measure is poor testing. (a) True (b) False
12. 12.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
13. 13.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
14. 14.🧪 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?
15. 15.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
17. 17.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 130 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.True or false: to change lots at once is good testing. (a) True (b) False
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) skip writing results (d) use the same load
22. 22.True or false: to hide a failed test is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) measure the same way (d) repeat each test
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.True or false: to skip writing results is good testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 410 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
30. 30.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
31. 31.True or false: to repeat each test is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
33. 33.🔢 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
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change lots at once (d) use the same load
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) repeat each test
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
40. 40.🔢 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

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