Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 639 · 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 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
2. 2.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) sketch three ideas
3. 3.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) repeat each test
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) measure the same way (d) use a new load each time
5. 5.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
6. 6.True or false: to test it only once is good testing. (a) True (b) False
7. 7.True or false: to hide a failed test is poor testing. (a) False (b) True
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) repeat each test (d) guess, do not measure
10. 10.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
11. 11.True or false: to repeat each test is poor testing. (a) True (b) False
12. 12.True or false: to skip writing results is good testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
16. 16.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
17. 17.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
18. 18.True or false: to repeat each test is good testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) guess, do not measure (d) record every result
22. 22.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
24. 24.True or false: to guess, do not measure is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) use a new load each time (d) guess, do not measure
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
34. 34.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) hide a failed test
40. 40.True or false: to use the same load is poor testing. (a) True (b) False

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