Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 77 · 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) skip writing results (b) use a new load each time (c) use the same load (d) test it only once
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design A (b) design C (c) design B
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
4. 4.🧪 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
5. 5.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.🧪 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?
9. 9.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.True or false: to record every result is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 150 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) guess, do not measure (d) record every result
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
27. 27.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
28. 28.True or false: to change lots at once is poor testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
30. 30.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) change only one thing (d) measure the same way
31. 31.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 60 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 test it only once? (a) poor testing (b) good testing
35. 35.True or false: to use the same load is poor testing. (a) True (b) False
36. 36.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
38. 38.True or false: to measure the same way is poor testing. (a) False (b) True
39. 39.True or false: to measure the same way is good testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) load it with coins

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