Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 970 · 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 FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 320 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) repeat each test
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) change only one thing
6. 6.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
7. 7.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to measure the same way is poor testing. (a) False (b) True
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.True or false: to change only one thing is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) record every result (d) measure the same way
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
14. 14.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to test it only once is poor testing. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) skip writing results (d) test it only once
17. 17.True or false: to repeat each test is good testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) use the same load
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) record every result (d) change only one thing
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
29. 29.🧪 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
30. 30.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
31. 31.True or false: to guess, do not measure is good testing. (a) False (b) True
32. 32.True or false: to use the same load is poor testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.True or false: to use a new load each time is poor testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) change only one thing
40. 40.True or false: to change lots at once is poor testing. (a) False (b) True

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