Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 496 · 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) use a new load each time (c) record every result (d) measure the same way
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 160 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.🧪 A paper bridge was tested three times. It held 170 g, 100 g and 240 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) two (b) none (c) one (d) all of them
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) hide a failed test
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) guess, do not measure (d) repeat each test
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
13. 13.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) guess, do not measure
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
19. 19.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) measure the same way (d) repeat each test
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
23. 23.🧪 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 strongest? (a) design B (b) design C (c) design A
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) use a new load each time
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
30. 30.True or false: to test it only once is poor testing. (a) False (b) True
31. 31.True or false: to guess, do not measure is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.True or false: to skip writing results is poor testing. (a) False (b) True
35. 35.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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