Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 980 · 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 170 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
5. 5.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) hide a failed test (d) change only one thing
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) measure the same way
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.🔢 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
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 170 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
15. 15.True or false: to use a new load each time is poor testing. (a) False (b) True
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use a new load each time (d) change only one thing
18. 18.True or false: to repeat each test is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.True or false: to hide a failed test is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) use the same load
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.True or false: to change lots at once is good testing. (a) False (b) True
33. 33.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
34. 34.True or false: to guess, do not measure is good testing. (a) True (b) False
35. 35.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
36. 36.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
38. 38.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.True or false: to guess, do not measure is poor testing. (a) True (b) False

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