Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 886 · 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 is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
2. 2.True or false: to guess, do not measure is poor testing. (a) True (b) False
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
4. 4.True or false: to change lots at once is poor testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
7. 7.🔢 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
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) skip writing results
11. 11.True or false: to change only one thing is good testing. (a) False (b) True
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) measure the same way (d) use a new load each time
17. 17.True or false: to use a new load each time is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
19. 19.True or false: to test it only once is poor testing. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) skip writing results
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) skip writing results (d) test it only once
22. 22.True or false: to change only one thing is poor testing. (a) False (b) True
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 270 g. What is the mean (average) load it held, in grams?
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
26. 26.🧪 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 A (b) design B (c) design C
27. 27.True or false: to skip writing results is poor testing. (a) True (b) False
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) test it only once
33. 33.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) repeat each test (d) guess, do not measure
34. 34.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 410 g, 350 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules

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