Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 335 · 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 comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
2. 2.True or false: to use the same load is poor testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) change lots at once
4. 4.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
7. 7.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) hide a failed test
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 weakest? (a) design B (b) design A (c) design C
12. 12.True or false: to use a new load each time is good testing. (a) False (b) True
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
14. 14.True or false: to guess, do not measure is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
19. 19.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
20. 20.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) measure the same way (d) hide a failed test
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design B (b) design A (c) design C
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
24. 24.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
25. 25.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
27. 27.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 120 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) measure the same way
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) record every result
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) skip writing results (d) change lots at once
35. 35.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 230 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to test it only once is good testing. (a) False (b) True
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 200 g. What is the mean (average) load it held, in grams?

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