Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 843 · 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.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design C (b) design A (c) design B
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) repeat each test
6. 6.True or false: to use a new load each time is poor testing. (a) True (b) False
7. 7.True or false: to test it only once is good testing. (a) False (b) True
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 guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) use the same load
12. 12.🧪 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 strongest? (a) design C (b) design A (c) design B
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
19. 19.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
20. 20.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
21. 21.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) use the same load
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
28. 28.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
30. 30.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use a new load each time (d) use the same load
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
35. 35.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to skip writing results is poor testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) skip writing results (d) change lots at once
39. 39.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) skip writing results (d) measure the same way
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C

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