Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 101 · 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 measure the same way is poor testing. (a) False (b) True
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
3. 3.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) use a new load each time
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) skip writing results
7. 7.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) use the same load
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) test it only once
9. 9.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change lots at once (d) skip writing results
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
13. 13.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 320 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) choose and draw one
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
18. 18.True or false: to hide a failed test is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
23. 23.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design A (c) design C
25. 25.True or false: to record every result is poor testing. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) test it only once (d) skip writing results
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
28. 28.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
29. 29.True or false: to change only one thing is poor testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
31. 31.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
32. 32.True or false: to use a new load each time is good testing. (a) True (b) False
33. 33.True or false: to guess, do not measure is good testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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