Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 890 · 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 guess, do not measure? (a) good testing (b) poor testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
3. 3.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
4. 4.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 130 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) repeat each test (d) record every result
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) use a new load each time
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) guess, do not measure (d) skip writing results
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
12. 12.True or false: to change only one thing is poor testing. (a) True (b) False
13. 13.True or false: to repeat each test is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use the same load (d) change lots at once
15. 15.🧪 A paper bridge was tested three times. It held 210 g, 60 g and 180 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
19. 19.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 120 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) test it only once
23. 23.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
24. 24.True or false: to use the same load is poor testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
26. 26.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use a new load each time (d) skip writing results
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
34. 34.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 380 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
37. 37.True or false: to use a new load each time is good testing. (a) False (b) True
38. 38.True or false: to change lots at once is good testing. (a) True (b) False
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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