Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 204 · 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 lots at once is poor testing. (a) False (b) True
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
3. 3.True or false: to record every result is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) guess, do not measure
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) sketch three ideas
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 70 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 370 g, 300 g and 230 g. What is the mean (average) load it held, in grams?
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use the same load (d) guess, do not measure
17. 17.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 290 g. What is the mean (average) load it held, in grams?
18. 18.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use a new load each time (d) change only one thing
21. 21.True or false: to guess, do not measure is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) use the same load
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 400 g, 340 g and 310 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to hide a failed test is good testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 160 g, 60 g and 260 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.🧪 A paper bridge was tested three times. It held 400 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to use a new load each time is poor testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
33. 33.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) skip writing results
34. 34.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🔢 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
39. 39.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
40. 40.🔢 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

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