Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 668 · 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 test it only once is good testing. (a) False (b) True
2. 2.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 310 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
8. 8.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
9. 9.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) change only one thing
11. 11.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) test it only once
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.True or false: to change only one thing is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) repeat each test
16. 16.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
17. 17.True or false: to record every result is poor testing. (a) True (b) False
18. 18.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.True or false: to use the same load is poor testing. (a) False (b) True
21. 21.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
23. 23.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
24. 24.🔢 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
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
26. 26.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
27. 27.🔢 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
28. 28.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change only one thing (d) use the same load
30. 30.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 400 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to change only one thing is good testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 370 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
36. 36.True or false: to guess, do not measure is good testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one

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