Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 125 · 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.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
2. 2.🧪 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 C (b) design B (c) design A
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) test it only once (d) skip writing results
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change lots at once (d) record every result
6. 6.True or false: to test it only once is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) record every result
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) guess, do not measure (d) use a new load each time
9. 9.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) use a new load each time
12. 12.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to repeat each test is good testing. (a) True (b) False
14. 14.True or false: to use a new load each time is poor testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
16. 16.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
17. 17.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) skip writing results (d) guess, do not measure
22. 22.True or false: to use the same load is good testing. (a) True (b) False
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
29. 29.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🧪 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 strongest? (a) design A (b) design B (c) design C
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
38. 38.True or false: to record every result is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 190 g. What is the mean (average) load it held, in grams?

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