Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 559 · 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) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
3. 3.🧪 A paper bridge was tested three times. It held 300 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
4. 4.🔢 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
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) guess, do not measure
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) use the same load (d) change only one thing
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 180 g, 120 g and 210 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
16. 16.🔢 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) sketch three ideas
17. 17.🔢 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
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.True or false: to measure the same way is good testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) guess, do not measure (d) use the same load
23. 23.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) guess, do not measure (d) test it only once
25. 25.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
26. 26.True or false: to use the same load is poor testing. (a) True (b) False
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
28. 28.True or false: to skip writing results is good testing. (a) True (b) False
29. 29.True or false: to change lots at once is poor testing. (a) False (b) True
30. 30.True or false: to change only one thing is poor testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🧪 A paper bridge was tested three times. It held 170 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) record every result

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