Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 153 · 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.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
2. 2.True or false: to repeat each test is poor testing. (a) True (b) False
3. 3.🧪 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?
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) load it with coins (d) read the challenge rules
5. 5.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) strengthen the weak part
6. 6.True or false: to use a new load each time is poor testing. (a) True (b) False
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
8. 8.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) hide a failed test
10. 10.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) guess, do not measure
12. 12.True or false: to test it only once is poor testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to guess, do not measure is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
18. 18.True or false: to change lots at once is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) use a new load each time
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
25. 25.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to use the same load is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
31. 31.True or false: to skip writing results is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) record every result
33. 33.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
34. 34.True or false: to hide a failed test is good testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 430 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
37. 37.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change lots at once (d) change only one thing
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
40. 40.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?

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