Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 308 · 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.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) change only one thing
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
6. 6.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) test it only once (d) skip writing results
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) repeat each test
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
13. 13.🧪 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
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
15. 15.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
19. 19.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) use a new load each time
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) skip writing results (d) repeat each test
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) repeat each test
26. 26.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
27. 27.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
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 240 g, 190 g and 260 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
32. 32.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
36. 36.True or false: to measure the same way is poor testing. (a) False (b) True
37. 37.True or false: to test it only once is poor testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to use the same load is good testing. (a) True (b) False

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