Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 660 · 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 a new load each time (b) change only one thing (c) record every result (d) measure the same way
2. 2.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) repeat each test (d) test it only once
5. 5.True or false: to change lots at once is good testing. (a) True (b) False
6. 6.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) guess, do not measure (d) use the same load
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change only one thing (d) test it only once
9. 9.🧪 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 C (b) design B (c) design A
10. 10.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) use a new load each time (d) measure the same way
11. 11.True or false: to use a new load each time is poor testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
14. 14.True or false: to measure the same way is poor testing. (a) True (b) False
15. 15.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
17. 17.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
21. 21.🧪 A paper bridge was tested three times. It held 440 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to guess, do not measure is poor testing. (a) False (b) True
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) measure the same way
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.🔢 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
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) skip writing results
33. 33.True or false: to skip writing results is poor testing. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) measure the same way (d) record every result
35. 35.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
37. 37.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) measure the same way (d) change only one thing
39. 39.🧪 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 C (c) design A
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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