Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 359 · 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.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
6. 6.True or false: to use a new load each time is poor testing. (a) True (b) False
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
8. 8.True or false: to guess, do not measure is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) repeat each test
10. 10.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) skip writing results (d) guess, do not measure
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to hide a failed test is good testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) measure the same way (d) repeat each test
19. 19.True or false: to guess, do not measure is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) change only one thing (d) use the same load
24. 24.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change only one thing (d) measure the same way
25. 25.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design C (b) design A (c) design B
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
32. 32.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🧪 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 weakest? (a) design C (b) design A (c) design B
35. 35.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) use the same load
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 150 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
39. 39.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
40. 40.True or false: to measure the same way is poor testing. (a) True (b) False

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