Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 953 · 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.True or false: to change lots at once is poor testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) read the challenge rules
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) skip writing results (d) measure the same way
9. 9.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) record every result
12. 12.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) choose and draw one
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design B (b) design C (c) design A
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
19. 19.True or false: to guess, do not measure is good testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) measure the same way
21. 21.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) repeat each test (d) record every result
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.True or false: to use a new load each time is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) measure the same way (d) repeat each test
28. 28.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
30. 30.True or false: to guess, do not measure is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 400 g. What is the mean (average) load it held, in grams?
32. 32.🧪 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 A (c) design C
33. 33.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
34. 34.True or false: to change only one thing is good testing. (a) False (b) True
35. 35.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
36. 36.True or false: to test it only once is good testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
39. 39.True or false: to skip writing results is poor testing. (a) False (b) True
40. 40.True or false: to use a new load each time is good testing. (a) False (b) True

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