Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 165 · 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) repeat each test (b) use a new load each time (c) change only one thing (d) record every result
2. 2.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) test it only once (d) skip writing results
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) repeat each test (d) change only one thing
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.True or false: to test it only once is poor testing. (a) False (b) True
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
9. 9.True or false: to guess, do not measure is poor testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
11. 11.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 210 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) change only one thing (d) skip writing results
13. 13.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) skip writing results
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) guess, do not measure
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
23. 23.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 410 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) test it only once (d) measure the same way
27. 27.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
29. 29.True or false: to change only one thing is poor testing. (a) False (b) True
30. 30.True or false: to record every result is poor testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
32. 32.True or false: to measure the same way is good testing. (a) False (b) True
33. 33.True or false: to use the same load is poor testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
38. 38.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
40. 40.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?

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