Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 828 · 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.True or false: to use a new load each time is good testing. (a) False (b) True
2. 2.True or false: to measure the same way is good testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 320 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
5. 5.True or false: to skip writing results is poor testing. (a) True (b) False
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to measure the same way is poor testing. (a) True (b) False
8. 8.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
9. 9.True or false: to guess, do not measure is poor testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) change lots at once
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) test it only once (d) hide a failed test
12. 12.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
18. 18.True or false: to change only one thing is poor testing. (a) False (b) True
19. 19.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
21. 21.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) record every result (d) change only one thing
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) test it only once
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) hide a failed test
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.True or false: to record every result is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.🧪 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
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) build it with straws
36. 36.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to change only one thing is good testing. (a) False (b) True
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing

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