Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 908 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) test it only once
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) record every result
5. 5.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) use a new load each time
7. 7.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
8. 8.True or false: to skip writing results is poor testing. (a) True (b) False
9. 9.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
10. 10.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
15. 15.True or false: to use a new load each time is poor testing. (a) False (b) True
16. 16.True or false: to change lots at once is good testing. (a) True (b) False
17. 17.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
18. 18.True or false: to change only one thing is good testing. (a) False (b) True
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.True or false: to repeat each test is good testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 260 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) repeat each test (d) record every result
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🔢 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
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
28. 28.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use a new load each time (d) change only one thing
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) skip writing results (d) use the same load
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) hide a failed test (d) measure the same way
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) guess, do not measure (d) repeat each test
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.True or false: to use the same load is good testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to measure the same way is good testing. (a) True (b) False
37. 37.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) sketch three ideas

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