Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 717 · 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 test it only once? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 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
5. 5.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
6. 6.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.True or false: to guess, do not measure is good testing. (a) False (b) True
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) skip writing results (d) change only one thing
11. 11.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
14. 14.True or false: to change lots at once is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) test it only once (d) repeat each test
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) hide a failed test (d) use the same load
23. 23.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.True or false: to use a new load each time is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) record every result
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
31. 31.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
32. 32.True or false: to change lots at once is poor testing. (a) True (b) False
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to hide a failed test is poor testing. (a) True (b) False
38. 38.True or false: to use the same load is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 410 g, 320 g and 290 g. What is the mean (average) load it held, in grams?

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