Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 386 · 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 only one thing is poor testing. (a) True (b) False
2. 2.True or false: to repeat each test is poor testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) change only one thing
4. 4.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
6. 6.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
7. 7.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) guess, do not measure (d) change lots at once
9. 9.True or false: to hide a failed test is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) repeat each test (d) guess, do not measure
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) change lots at once
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
18. 18.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
22. 22.🔢 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
23. 23.True or false: to change only one thing is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) test it only once (d) skip writing results
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) guess, do not measure (d) record every result
28. 28.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
30. 30.🔢 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
31. 31.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 150 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
35. 35.🧪 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 strongest? (a) design C (b) design B (c) design A
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) record every result
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to use the same load is good testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) sketch three ideas

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