Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 812 · 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.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use a new load each time (d) record every result
2. 2.True or false: to guess, do not measure is good testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) skip writing results (d) guess, do not measure
6. 6.True or false: to record every result is poor testing. (a) False (b) True
7. 7.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
8. 8.True or false: to change only one thing is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
10. 10.True or false: to record every result is good testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.🔢 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) strengthen the weak part (d) choose and draw one
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) guess, do not measure (d) hide a failed test
15. 15.True or false: to use a new load each time is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) use the same load
21. 21.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) load it with coins
24. 24.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 200 g, 110 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 440 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins
29. 29.True or false: to measure the same way is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) use the same load (d) change only one thing
31. 31.True or false: to skip writing results is poor testing. (a) True (b) False
32. 32.True or false: to repeat each test is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
35. 35.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
36. 36.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) hide a failed test (d) use a new load each time
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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