Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 593 · 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) test it only once (b) repeat each test (c) use a new load each time (d) guess, do not measure
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) load it with coins
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
6. 6.True or false: to guess, do not measure is poor testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
10. 10.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) guess, do not measure (d) record every result
12. 12.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 270 g. What is the mean (average) load it held, in grams?
13. 13.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
14. 14.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
15. 15.🧪 A paper bridge was tested three times. It held 180 g, 70 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to change only one thing is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
21. 21.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
24. 24.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🔍 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
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
29. 29.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) hide a failed test (d) use a new load each time
30. 30.True or false: to hide a failed test is good testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) change only one thing (d) guess, do not measure
37. 37.True or false: to change lots at once is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
39. 39.True or false: to change only one thing is poor testing. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) measure the same way (d) repeat each test

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