Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 514 · 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.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) test it only once
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) build it with straws
5. 5.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
7. 7.🧪 A paper bridge was tested three times. It held 160 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
11. 11.True or false: to test it only once is poor testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) change lots at once (d) skip writing results
13. 13.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) guess, do not measure (d) repeat each test
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🧪 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
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🔢 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
22. 22.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) change lots at once
23. 23.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) skip writing results (d) test it only once
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 440 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) record every result
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🧪 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 weakest? (a) design B (b) design C (c) design A
40. 40.True or false: to record every result is good testing. (a) False (b) True

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