Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 389 · 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.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
2. 2.True or false: to skip writing results is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 110 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to change lots at once is good testing. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) repeat each test (d) change only one thing
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) guess, do not measure
8. 8.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 90 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
12. 12.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
13. 13.True or false: to use a new load each time is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) record every result
15. 15.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) measure the same way
16. 16.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
19. 19.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use the same load (d) test it only once
22. 22.True or false: to guess, do not measure is poor testing. (a) True (b) False
23. 23.True or false: to hide a failed test is good testing. (a) True (b) False
24. 24.True or false: to use the same load is poor testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.True or false: to repeat each test is poor testing. (a) False (b) True
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) test it only once
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
31. 31.True or false: to record every result is poor testing. (a) True (b) False
32. 32.True or false: to change only one thing is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to guess, do not measure is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
40. 40.True or false: to hide a failed test is poor testing. (a) False (b) True

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