Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 493 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
3. 3.🔢 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) build it with straws (d) sketch three ideas
4. 4.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
5. 5.🧪 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 weakest? (a) design A (b) design B (c) design C
6. 6.True or false: to change only one thing is poor testing. (a) False (b) True
7. 7.True or false: to measure the same way is poor testing. (a) True (b) False
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change lots at once (d) test it only once
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.True or false: to use the same load is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) hide a failed test (d) use a new load each time
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) repeat each test (d) use the same load
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) change lots at once (d) record every result
21. 21.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
23. 23.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
24. 24.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
25. 25.True or false: to skip writing results is good testing. (a) True (b) False
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 guess, do not measure is good testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) hide a failed test (d) use a new load each time
29. 29.True or false: to change only one thing is good 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) sketch three ideas (c) load it with coins (d) read the challenge rules
31. 31.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to test it only once is good testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) measure the same way (d) hide a failed test
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) use a new load each time

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