Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 575 · 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.True or false: to change lots at once is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) repeat each test (d) hide a failed test
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
5. 5.True or false: to measure the same way is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) measure the same way
10. 10.True or false: to guess, do not measure is poor testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) test it only once (d) use a new load each time
13. 13.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) choose and draw one
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) record every result (d) use the same load
24. 24.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
25. 25.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
26. 26.True or false: to hide a failed test is poor testing. (a) False (b) True
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 230 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to use the same load is good testing. (a) True (b) False
30. 30.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) test it only once (d) record every result
32. 32.True or false: to record every result is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
34. 34.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
35. 35.🧪 A paper bridge was tested three times. It held 340 g, 330 g and 350 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to test it only once is good testing. (a) False (b) True
37. 37.True or false: to change lots at once is poor testing. (a) True (b) False
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.True or false: to record every result is good testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) skip writing results

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