Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 868 · 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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.True or false: to use a new load each time is poor testing. (a) False (b) True
14. 14.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
16. 16.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) test it only once (d) repeat each test
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 340 g and 290 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to change only one thing is good testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
26. 26.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use a new load each time (d) change lots at once
29. 29.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to test it only once is good testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
33. 33.True or false: to skip writing results is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use the same load (d) change lots at once
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) repeat each test (d) change only one thing
39. 39.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) guess, do not measure
40. 40.True or false: to test it only once is poor testing. (a) True (b) False

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