Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 719 · 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 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) record every result (d) measure the same way
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.True or false: to change only one thing is good testing. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) repeat each test (d) record every result
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) change lots at once (d) hide a failed test
10. 10.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
13. 13.True or false: to hide a failed test is good testing. (a) True (b) False
14. 14.True or false: to skip writing results is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) skip writing results (d) change lots at once
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change lots at once (d) change only one thing
18. 18.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.🔢 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
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) measure the same way
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
26. 26.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
27. 27.True or false: to skip writing results is good testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) record every result
29. 29.True or false: to use the same load is good testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
32. 32.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.True or false: to use a new load each time is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
36. 36.True or false: to use a new load each time is good testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) use a new load each time
38. 38.True or false: to measure the same way is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 380 g, 340 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B

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