Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 44 · 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.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) use the same load
5. 5.🔢 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
6. 6.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
7. 7.🧪 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
8. 8.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change lots at once (d) record every result
9. 9.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) load it with coins
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) hide a failed test (d) repeat each test
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
18. 18.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use a new load each time (d) repeat each test
21. 21.🔢 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
22. 22.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change lots at once (d) change only one thing
27. 27.True or false: to use the same load is good testing. (a) True (b) False
28. 28.True or false: to change lots at once is good testing. (a) False (b) True
29. 29.True or false: to repeat each test is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 450 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to change only one thing is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
34. 34.True or false: to guess, do not measure is good testing. (a) True (b) False
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) skip writing results
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 180 g. What is the mean (average) load it held, in grams?

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