Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 292 · 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.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) use a new load each time
4. 4.🧪 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
5. 5.🧪 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 weakest? (a) design C (b) design B (c) design A
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
7. 7.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) load it with coins
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
12. 12.🔢 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
13. 13.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) record every result (d) repeat each test
20. 20.True or false: to test it only once is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) repeat each test
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🔢 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
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
25. 25.🧪 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 C (b) design B (c) design A
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) change only one thing
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
28. 28.🧪 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 B (b) design C (c) design A
29. 29.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
32. 32.True or false: to use a new load each time is poor testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
35. 35.True or false: to skip writing results is poor testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) hide a failed test (d) repeat each test
37. 37.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) measure the same way (d) change lots at once

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