Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 47 · 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.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 110 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) build it with straws (d) read the challenge rules
9. 9.True or false: to repeat each test is poor testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) record every result (d) repeat each test
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
17. 17.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 270 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to test it only once is good testing. (a) True (b) False
20. 20.True or false: to use the same load is poor testing. (a) False (b) True
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) repeat each test
24. 24.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
25. 25.True or false: to hide a failed test is poor testing. (a) True (b) False
26. 26.True or false: to use the same load is good testing. (a) False (b) True
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
29. 29.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
30. 30.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) test it only once
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) record every result
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
40. 40.True or false: to guess, do not measure is poor testing. (a) False (b) True

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