Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 504 · 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 test it only once? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) skip writing results (d) change lots at once
3. 3.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 210 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.True or false: to measure the same way is good testing. (a) False (b) True
6. 6.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
7. 7.True or false: to record every result is good testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) guess, do not measure (d) use the same load
9. 9.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.True or false: to use the same load is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
18. 18.True or false: to hide a failed test is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 70 g and 170 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to record every result is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 360 g. What is the mean (average) load it held, in grams?
24. 24.🧪 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 strongest? (a) design C (b) design A (c) design B
25. 25.True or false: to change only one thing is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) change only one thing
29. 29.🧪 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 weakest? (a) design B (b) design C (c) design A
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) record every result (d) change only one thing
32. 32.True or false: to repeat each test is good testing. (a) False (b) True
33. 33.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
35. 35.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 360 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
39. 39.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?

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