Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 212 · 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 repeat each test is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) measure the same way (d) record every result
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.True or false: to skip writing results is good testing. (a) True (b) False
5. 5.True or false: to test it only once is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
7. 7.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) measure the same way
11. 11.🧪 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
12. 12.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
13. 13.True or false: to change only one thing is good testing. (a) True (b) False
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
16. 16.🧪 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 strongest? (a) design B (b) design C (c) design A
17. 17.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
19. 19.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
21. 21.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 280 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to record every result is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 380 g, 330 g and 340 g. What is the mean (average) load it held, in grams?
26. 26.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
27. 27.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
28. 28.True or false: to guess, do not measure is good testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 260 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to hide a failed test is good testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) test it only once
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) repeat each test (d) change only one thing
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
38. 38.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) choose and draw one
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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