Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 662 · 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 hide a failed test? (a) poor testing (b) good testing
2. 2.True or false: to record every result is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) use the same load
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
6. 6.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) use the same load (d) change only one thing
11. 11.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
13. 13.True or false: to measure the same way is good testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 190 g, 100 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
23. 23.True or false: to change lots at once is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use the same load (d) use a new load each time
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) use the same load
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 160 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 310 g, 220 g and 400 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 120 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to use the same load is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use a new load each time (d) test it only once
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
33. 33.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 130 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
36. 36.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) test it only once (d) guess, do not measure
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
39. 39.True or false: to test it only once is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas

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