Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 920 · 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.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) record every result
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
4. 4.True or false: to skip writing results is good testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
8. 8.True or false: to change lots at once is poor testing. (a) True (b) False
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) measure the same way
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) sketch three ideas
13. 13.True or false: to test it only once is good testing. (a) True (b) False
14. 14.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
15. 15.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
16. 16.True or false: to use a new load each time is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) use a new load each time
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) read the challenge rules
22. 22.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) guess, do not measure (d) use a new load each time
27. 27.True or false: to change lots at once is good testing. (a) False (b) True
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design C (b) design B (c) design A
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) use the same load
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.True or false: to change only one thing is good testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to guess, do not measure is good testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design B (b) design A (c) design C

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