Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 207 · 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 skip writing results? (a) good testing (b) poor testing
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
3. 3.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
4. 4.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
6. 6.True or false: to change only one thing is good testing. (a) True (b) False
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
8. 8.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
9. 9.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
12. 12.True or false: to measure the same way is poor testing. (a) True (b) False
13. 13.True or false: to hide a failed test is poor testing. (a) True (b) False
14. 14.True or false: to repeat each test is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) record every result (d) change only one thing
16. 16.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
17. 17.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change only one thing (d) record every result
18. 18.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) test it only once (d) guess, do not measure
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) skip writing results
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) change only one thing (d) change lots at once
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to skip writing results is poor testing. (a) False (b) True
26. 26.True or false: to change lots at once is good testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change only one thing is poor testing. (a) False (b) True
29. 29.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
30. 30.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) sketch three ideas
33. 33.True or false: to test it only once is good testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
36. 36.True or false: to change lots at once is poor testing. (a) False (b) True
37. 37.True or false: to record every result is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use a new load each time (d) change lots at once

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