Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 411 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design A (c) design B
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use the same load (d) change lots at once
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) skip writing results
4. 4.True or false: to use the same load is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
6. 6.True or false: to measure the same way is poor testing. (a) True (b) False
7. 7.True or false: to test it only once is good testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) use a new load each time
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
12. 12.True or false: to guess, do not measure is poor testing. (a) False (b) True
13. 13.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.True or false: to change lots at once is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
17. 17.True or false: to change lots at once is good testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
19. 19.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change lots at once (d) skip writing results
22. 22.🧪 A paper bridge was tested three times. It held 390 g, 340 g and 290 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
24. 24.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) measure the same way
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) change only one thing
26. 26.True or false: to guess, do not measure is good testing. (a) False (b) True
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.True or false: to test it only once is poor testing. (a) True (b) False
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.True or false: to change only one thing is good testing. (a) True (b) False
35. 35.True or false: to repeat each test is poor testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas

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