Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 782 · 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.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
6. 6.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
8. 8.True or false: to change only one thing is good testing. (a) True (b) False
9. 9.True or false: to measure the same way is poor testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
14. 14.🧪 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 A (b) design B (c) design C
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
16. 16.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 340 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
18. 18.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.True or false: to record every result is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.True or false: to use the same load is good testing. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) record every result
25. 25.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) skip writing results (d) hide a failed test
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) hide a failed test (d) skip writing results
28. 28.True or false: to test it only once is poor testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design C (b) design A (c) design B
30. 30.True or false: to use a new load each time is good testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) hide a failed test
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🔢 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
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
36. 36.True or false: to skip writing results is good testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) use the same load
40. 40.True or false: to guess, do not measure is good testing. (a) False (b) True

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