Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 509 · 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 guess, do not measure is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.True or false: to use the same load is good testing. (a) False (b) True
4. 4.True or false: to change only one thing is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 430 g, 300 g and 290 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
9. 9.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) change lots at once
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
12. 12.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.True or false: to record every result is good testing. (a) False (b) True
15. 15.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
16. 16.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) guess, do not measure (d) change lots at once
19. 19.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) guess, do not measure (d) repeat each test
20. 20.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 230 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
24. 24.True or false: to use the same load is poor testing. (a) True (b) False
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) record every result (d) measure the same way
27. 27.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
28. 28.True or false: to change lots at once is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 180 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 370 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
36. 36.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 310 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B

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