Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 996 · 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 record every result? (a) good testing (b) poor testing
2. 2.🧪 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 strongest? (a) design C (b) design B (c) design A
3. 3.True or false: to measure the same way is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) record every result
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
8. 8.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) repeat each test (d) use the same load
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) record every result (d) change only one thing
13. 13.True or false: to change only one thing is good testing. (a) False (b) True
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
16. 16.🧪 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
17. 17.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) hide a failed test
18. 18.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) change only one thing
20. 20.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to measure the same way is poor testing. (a) False (b) True
22. 22.True or false: to test it only once is good testing. (a) False (b) True
23. 23.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to guess, do not measure is poor testing. (a) False (b) True
26. 26.True or false: to repeat each test is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design B (b) design A (c) design C
29. 29.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 170 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to record every result is good testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
35. 35.🧪 A paper bridge was tested three times. It held 160 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🧪 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 A (b) design B (c) design C
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) test it only once

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