Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 922 · 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) test it only once (b) repeat each test (c) change lots at once (d) hide a failed test
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) change only one thing
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.True or false: to change only one thing is poor testing. (a) True (b) False
11. 11.True or false: to repeat each test is good testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) guess, do not measure (d) use the same load
13. 13.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) use the same load (d) record every result
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) guess, do not measure (d) test it only once
18. 18.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 290 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
24. 24.True or false: to test it only once is poor testing. (a) False (b) True
25. 25.True or false: to record every result is poor testing. (a) True (b) False
26. 26.True or false: to use a new load each time is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
28. 28.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.True or false: to change lots at once is good testing. (a) False (b) True
30. 30.🧪 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 B (b) design C (c) design A
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.True or false: to measure the same way is good testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
34. 34.True or false: to change lots at once is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
38. 38.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one

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