Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 809 · 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 measure the same way? (a) poor testing (b) good testing
2. 2.True or false: to change lots at once is good testing. (a) False (b) True
3. 3.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
12. 12.True or false: to record every result is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
15. 15.True or false: to test it only once is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) skip writing results
17. 17.True or false: to use a new load each time is good testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) use the same load
19. 19.🧪 A paper bridge was tested three times. It held 190 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
22. 22.True or false: to record every result is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change lots at once (d) change only one thing
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use a new load each time (d) guess, do not measure
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to use the same load is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) use a new load each time
32. 32.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
33. 33.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) hide a failed test (d) skip writing results
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 190 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) hide a failed test

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