Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 87 · 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 test it only once is good testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) repeat each test (d) skip writing results
7. 7.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
9. 9.True or false: to change lots at once is poor testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) use the same load (d) skip writing results
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) hide a failed test (d) use a new load each time
13. 13.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) skip writing results (d) change only one thing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) test it only once
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🧪 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
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
26. 26.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) test it only once
28. 28.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) hide a failed test (d) guess, do not measure
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
30. 30.🔢 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
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
33. 33.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 300 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to hide a failed test is poor testing. (a) False (b) True
35. 35.True or false: to record every result is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
37. 37.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) change lots at once
40. 40.🧪 A paper bridge was tested three times. It held 210 g, 70 g and 170 g. What is the mean (average) load it held, in grams?

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