Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 465 · 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.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) change only one thing
2. 2.True or false: to skip writing results is good testing. (a) False (b) True
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
4. 4.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) change only one thing
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change lots at once (d) change only one thing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
8. 8.True or false: to repeat each test is good testing. (a) False (b) True
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.True or false: to use a new load each time is good testing. (a) True (b) False
12. 12.🧪 The first prototype held 60 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 measure the same way? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) repeat each test
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.True or false: to change lots at once is poor testing. (a) False (b) True
21. 21.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
22. 22.True or false: to skip writing results is poor testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) use a new load each time
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) guess, do not measure (d) record every result
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 340 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
29. 29.True or false: to test it only once is good testing. (a) True (b) False
30. 30.True or false: to change lots at once is good testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 370 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to guess, do not measure is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 190 g. What is the mean (average) load it held, in grams?

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