Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 164 · 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 guess, do not measure is poor testing. (a) True (b) False
2. 2.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
3. 3.🔢 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
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) change only one thing
7. 7.True or false: to use the same load is poor testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) measure the same way
9. 9.🧪 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
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.True or false: to use a new load each time is poor testing. (a) False (b) True
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
13. 13.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 370 g, 310 g and 340 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to hide a failed test is poor testing. (a) True (b) False
16. 16.True or false: to use a new load each time is good testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
19. 19.True or false: to repeat each test is good testing. (a) False (b) True
20. 20.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
21. 21.🔢 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
22. 22.🧪 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 C (b) design A (c) design B
23. 23.True or false: to change only one thing is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 100 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
28. 28.True or false: to change only one thing is poor testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use the same load (d) record every result
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) change lots at once
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
34. 34.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
37. 37.🔢 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
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
39. 39.🔢 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
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 g. What is the mean (average) load it held, in grams?

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