Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 134 · 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.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) use the same load
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 60 g and 140 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) use the same load
7. 7.True or false: to use a new load each time is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
9. 9.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) guess, do not measure (d) use the same load
10. 10.True or false: to record every result is poor testing. (a) False (b) True
11. 11.🧪 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
12. 12.True or false: to test it only once is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
17. 17.🔢 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
18. 18.True or false: to repeat each test is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design C (b) design A (c) design B
21. 21.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) skip writing results (d) record every result
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
25. 25.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) repeat each test (d) guess, do not measure
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 90 g. What is the mean (average) load it held, in grams?
36. 36.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
37. 37.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
40. 40.True or false: to use the same load is good testing. (a) False (b) True

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