Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 362 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) change only one thing
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
7. 7.True or false: to change lots at once is poor testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
11. 11.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.True or false: to record every result is poor testing. (a) True (b) False
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
16. 16.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) repeat each test
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) measure the same way (d) record every result
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) record every result
21. 21.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
22. 22.True or false: to change only one thing is poor testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
25. 25.True or false: to measure the same way is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) skip writing results (d) use a new load each time
28. 28.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) guess, do not measure (d) change lots at once
29. 29.True or false: to change only one thing is good testing. (a) False (b) True
30. 30.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 120 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
33. 33.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) test it only once
34. 34.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) sketch three ideas
36. 36.True or false: to repeat each test is good testing. (a) False (b) True
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 290 g. What is the mean (average) load it held, in grams?

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