Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 13 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
2. 2.True or false: to record every result is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
7. 7.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) skip writing results (d) guess, do not measure
8. 8.True or false: to record every result is good testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
12. 12.🧪 A paper bridge was tested three times. It held 310 g, 300 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) measure the same way
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
16. 16.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) hide a failed test
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to measure the same way is poor testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) repeat each test (d) change lots at once
23. 23.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) use the same load
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
25. 25.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
26. 26.True or false: to repeat each test is good testing. (a) True (b) False
27. 27.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
30. 30.True or false: to skip writing results is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) measure the same way (d) repeat each test
32. 32.🧪 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
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) repeat each test
36. 36.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 380 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to measure the same way is good testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) hide a failed test (d) skip writing results
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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