Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 398 · 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.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) use the same load
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
6. 6.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change lots at once (d) hide a failed test
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.True or false: to hide a failed test is poor testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) test it only once
16. 16.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) build it with straws
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.🧪 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
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
20. 20.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🧪 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?
24. 24.True or false: to change only one thing is poor testing. (a) True (b) False
25. 25.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
26. 26.🧪 A paper bridge was tested three times. It held 370 g, 300 g and 260 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) guess, do not measure (d) change only one thing
35. 35.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
37. 37.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 390 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 340 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 320 g. What is the mean (average) load it held, in grams?

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