Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 119 · 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 380 g, 350 g and 320 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) build it with straws
3. 3.🔍 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
4. 4.True or false: to guess, do not measure is good testing. (a) True (b) False
5. 5.True or false: to change only one thing is good testing. (a) True (b) False
6. 6.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
8. 8.🧪 The first prototype held 300 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 hide a failed test is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
14. 14.🔢 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
15. 15.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
18. 18.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) hide a failed test
19. 19.True or false: to record every result is good testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.True or false: to repeat each test is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) test it only once (d) change only one thing
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🔢 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
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 260 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.True or false: to use the same load is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) change only one thing (d) test it only once
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) skip writing results (d) measure the same way
36. 36.True or false: to change lots at once is poor testing. (a) False (b) True
37. 37.True or false: to measure the same way is poor testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?

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