Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 537 · 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 measure the same way is good testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 390 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) repeat each test
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) use a new load each time
6. 6.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
7. 7.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
10. 10.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 350 g. What is the mean (average) load it held, in grams?
11. 11.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) repeat each test (d) use the same load
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) record every result
15. 15.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
16. 16.True or false: to measure the same way is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) record every result
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
19. 19.True or false: to change lots at once is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use a new load each time (d) change lots at once
22. 22.True or false: to repeat each test is good testing. (a) False (b) True
23. 23.True or false: to skip writing results is poor testing. (a) False (b) True
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
25. 25.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.True or false: to hide a failed test is good testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use a new load each time (d) change only one thing
34. 34.🔢 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) load it with coins (d) build it with straws
35. 35.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🔢 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
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins

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