Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 712 · 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 comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) skip writing results (d) change only one thing
6. 6.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
7. 7.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) record every result (d) test it only once
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 350 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to use a new load each time is good testing. (a) False (b) True
16. 16.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 320 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
21. 21.True or false: to guess, do not measure is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 390 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.True or false: to change only one thing is good testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) hide a failed test
31. 31.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) test it only once
34. 34.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
35. 35.🔢 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
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
38. 38.True or false: to change lots at once is poor testing. (a) True (b) False
39. 39.🔢 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) read the challenge rules
40. 40.True or false: to record every result is good testing. (a) True (b) False

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