Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 333 · 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.🔢 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) load it with coins
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 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) hide a failed test (c) use a new load each time (d) skip writing results
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
14. 14.True or false: to use a new load each time is poor testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) test it only once (d) measure the same way
17. 17.True or false: to change only one thing is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use the same load (d) guess, do not measure
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) build it with straws
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
21. 21.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
22. 22.True or false: to skip writing results is poor testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
24. 24.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) use a new load each time (d) repeat each test
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) hide a failed test
27. 27.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
31. 31.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) guess, do not measure
34. 34.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 190 g. What is the mean (average) load it held, in grams?
39. 39.🔢 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
40. 40.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules

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