Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 376 · 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.True or false: to skip writing results is poor testing. (a) False (b) True
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
5. 5.True or false: to change lots at once is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) record every result (d) change only one thing
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
13. 13.True or false: to guess, do not measure is poor testing. (a) True (b) False
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
15. 15.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) guess, do not measure
17. 17.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 280 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) hide a failed test (d) guess, do not measure
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change only one thing (d) repeat each test
21. 21.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change only one thing (d) repeat each test
22. 22.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
24. 24.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use a new load each time (d) guess, do not measure
29. 29.True or false: to measure the same way is good testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🧪 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 strongest? (a) design B (b) design A (c) design C
32. 32.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.True or false: to change only one thing is good testing. (a) False (b) True
36. 36.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
37. 37.🔢 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
38. 38.True or false: to use a new load each time is poor testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.True or false: to use the same load is good testing. (a) False (b) True

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