Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 691 · 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.🧪 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
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) guess, do not measure (d) change lots at once
5. 5.🧪 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 B (b) design A (c) design C
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design C (b) design B (c) design A
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) change lots at once
8. 8.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) guess, do not measure
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.True or false: to use the same load is good testing. (a) True (b) False
11. 11.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
14. 14.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 400 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use the same load (d) change lots at once
19. 19.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) repeat each test (d) change only one thing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
26. 26.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
34. 34.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
35. 35.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) measure the same way (d) record every result
37. 37.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
38. 38.True or false: to change lots at once is good testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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