Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 622 · 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 the same load (c) measure the same way (d) use a new load each time
2. 2.True or false: to use a new load each time is good testing. (a) True (b) False
3. 3.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
4. 4.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
6. 6.True or false: to hide a failed test is poor testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
9. 9.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 100 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) test it only once
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
13. 13.True or false: to skip writing results is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
15. 15.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) load it with coins
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) record every result
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) guess, do not measure
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.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) guess, do not measure (d) measure the same way
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) hide a failed test (d) change lots at once
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use a new load each time (d) hide a failed test
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
34. 34.🧪 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 B (b) design A (c) design C
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
36. 36.True or false: to record every result is poor testing. (a) True (b) False
37. 37.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

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