Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 727 · 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 “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) record every result
3. 3.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) change lots at once
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) test it only once (d) use a new load each time
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 270 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to measure the same way is good testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) record every result (d) use the same load
9. 9.True or false: to hide a failed test is poor testing. (a) False (b) True
10. 10.True or false: to use the same load is poor testing. (a) True (b) False
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) test it only once
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
17. 17.True or false: to repeat each test is poor testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
20. 20.True or false: to guess, do not measure is poor testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
23. 23.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) use a new load each time
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) record every result
26. 26.🧪 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
27. 27.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
30. 30.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) hide a failed test
33. 33.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) choose and draw one
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) change only one thing
40. 40.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing

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