Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 266 · 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.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
2. 2.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
3. 3.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
6. 6.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
8. 8.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
13. 13.True or false: to measure the same way is good testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
18. 18.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
20. 20.True or false: to hide a failed test is good testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 200 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 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) read the challenge rules
25. 25.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 340 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) record every result (d) measure the same way
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.True or false: to change lots at once is good testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) test it only once
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) hide a failed test (d) use the same load
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) measure the same way (d) repeat each test
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing

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