Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 86 · 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 test it only once is good testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use the same load (d) record every result
4. 4.True or false: to use a new load each time is poor testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 140 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.True or false: to guess, do not measure is good testing. (a) True (b) False
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
9. 9.True or false: to measure the same way is poor testing. (a) True (b) False
10. 10.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 230 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change only one thing (d) skip writing results
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) skip writing results (d) record every result
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
20. 20.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) test it only once
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) record every result (d) test it only once
26. 26.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to skip writing results is poor testing. (a) False (b) True
30. 30.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
33. 33.True or false: to use the same load is poor testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 340 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
39. 39.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
40. 40.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 220 g. What is the mean (average) load it held, in grams?

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