Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 796 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.True or false: to measure the same way is good testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) skip writing results (d) test it only once
4. 4.🔢 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
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
6. 6.True or false: to repeat each test is poor testing. (a) False (b) True
7. 7.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) repeat each test (d) measure the same way
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
13. 13.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
16. 16.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
21. 21.True or false: to measure the same way is poor testing. (a) True (b) False
22. 22.True or false: to test it only once is good testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 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) change only one thing (c) change lots at once (d) test it only once
27. 27.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) measure the same way
28. 28.🧪 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
29. 29.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
32. 32.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change only one thing (d) repeat each test
33. 33.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
37. 37.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to hide a failed test is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to change only one thing is poor testing. (a) True (b) False

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