Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 924 · 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) guess, do not measure (b) use a new load each time (c) use the same load (d) skip writing results
2. 2.True or false: to use a new load each time is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
4. 4.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
5. 5.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
6. 6.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
7. 7.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) repeat each test (d) record every result
8. 8.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) repeat each test
12. 12.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) skip writing results
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) guess, do not measure
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) skip writing results (d) test it only once
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) record every result
20. 20.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to record every result is poor testing. (a) False (b) True
25. 25.True or false: to record every result is good testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.True or false: to repeat each test is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) hide a failed test (d) guess, do not measure
30. 30.True or false: to measure the same way is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) measure the same way
32. 32.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design A (c) design B
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 180 g. What is the mean (average) load it held, in grams?

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