Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 767 · 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) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) use a new load each time
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) record every result
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) skip writing results
6. 6.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) hide a failed test (d) guess, do not measure
8. 8.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design C (c) design A
12. 12.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.True or false: to repeat each test is good testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) repeat each test (d) record every result
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) test it only once (d) use a new load each time
20. 20.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use a new load each time (d) change only one thing
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
22. 22.True or false: to record every result is good testing. (a) True (b) False
23. 23.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
24. 24.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
25. 25.True or false: to skip writing results is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 120 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to skip writing results is poor testing. (a) True (b) False
28. 28.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
32. 32.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
33. 33.True or false: to change lots at once is poor testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) record every result (d) change only one thing
35. 35.True or false: to hide a failed test is poor testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 190 g. What is the mean (average) load it held, in grams?

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