Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 231 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) build it with straws
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
3. 3.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change only one thing (d) change lots at once
7. 7.True or false: to record every result is poor testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) change lots at once
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 290 g and 280 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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
13. 13.True or false: to repeat each test is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) hide a failed test (d) record every result
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) test it only once
17. 17.True or false: to repeat each test is good testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
19. 19.True or false: to change only one thing is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) guess, do not measure (d) change lots at once
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) read the challenge rules
25. 25.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change lots at once is poor testing. (a) True (b) False
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
33. 33.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
34. 34.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) test it only once
36. 36.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one

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