Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 513 · 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 test it only once is good testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
3. 3.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 370 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) test it only once
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
12. 12.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
14. 14.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change lots at once (d) skip writing results
15. 15.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 90 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 380 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
19. 19.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
20. 20.True or false: to change only one thing is good testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.True or false: to use a new load each time is good testing. (a) False (b) True
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 230 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) use a new load each time (d) use the same load
27. 27.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) use a new load each time (d) repeat each test
29. 29.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to measure the same way is good testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 150 g, 50 g and 250 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) guess, do not measure
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) read the challenge rules
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) repeat each test (d) change lots at once

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