Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 863 · 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 record every result? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
4. 4.🧪 A paper bridge was tested three times. It held 170 g, 50 g and 230 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 140 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change lots at once (d) skip writing results
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design B (c) design C
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to test it only once is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.True or false: to guess, do not measure is good testing. (a) True (b) False
19. 19.True or false: to change lots at once is poor testing. (a) True (b) False
20. 20.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
21. 21.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
23. 23.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
24. 24.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) record every result (d) use the same load
26. 26.True or false: to measure the same way is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) record every result (d) skip writing results
28. 28.True or false: to use a new load each time is good testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 210 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) skip writing results (d) change lots at once
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change lots at once (d) guess, do not measure
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.True or false: to repeat each test is good testing. (a) False (b) True
38. 38.True or false: to record every result is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
40. 40.True or false: to change only one thing is poor testing. (a) False (b) True

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