Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 519 · 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) use the same load (b) skip writing results (c) hide a failed test (d) use a new load each time
2. 2.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) use a new load each time (d) hide a failed test
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
10. 10.True or false: to hide a failed test is good testing. (a) False (b) True
11. 11.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
12. 12.True or false: to measure the same way is good testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
15. 15.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) hide a failed test (d) test it only once
16. 16.🔢 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) sketch three ideas (d) load it with coins
17. 17.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) use a new load each time
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.True or false: to use the same load is good testing. (a) True (b) False
21. 21.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
24. 24.True or false: to change only one thing is good testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) strengthen the weak part
26. 26.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) skip writing results (d) change only one thing
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.True or false: to measure the same way is poor testing. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) repeat each test
32. 32.True or false: to test it only once is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use the same load (d) change only one thing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins

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