Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 623 · 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.🧪 A paper bridge was tested three times. It held 430 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to measure the same way is good testing. (a) False (b) True
3. 3.True or false: to repeat each test is poor testing. (a) True (b) False
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) test it only once
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design C (b) design A (c) design B
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change lots at once (d) test it only once
10. 10.True or false: to hide a failed test is good testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
12. 12.True or false: to use the same load is poor testing. (a) False (b) True
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
15. 15.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 110 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 360 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 380 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) skip writing results
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) hide a failed test (d) skip writing results
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) load it with coins
32. 32.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 370 g. What is the mean (average) load it held, in grams?
33. 33.🔢 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) read the challenge rules
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 340 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) use a new load each time (d) guess, do not measure

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