Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 994 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) test it only once
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) change lots at once
7. 7.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
12. 12.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) measure the same way (d) change only one thing
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) change lots at once
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) load it with coins
17. 17.True or false: to use the same load is good testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) hide a failed test
19. 19.True or false: to change lots at once is poor testing. (a) False (b) True
20. 20.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
21. 21.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
24. 24.True or false: to record every result is good testing. (a) True (b) False
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
27. 27.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 320 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
29. 29.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
31. 31.🧪 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 strongest? (a) design C (b) design A (c) design B
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to skip writing results is good testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) test it only once (d) record every result
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 90 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws

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