Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 508 · 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.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 320 g, 320 g and 320 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
5. 5.True or false: to test it only once is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
7. 7.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
12. 12.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
13. 13.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change lots at once (d) use a new load each time
15. 15.True or false: to hide a failed test is good testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
17. 17.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 340 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
25. 25.True or false: to skip writing results is good testing. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) change only one thing
27. 27.🔢 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
28. 28.True or false: to repeat each test is poor testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) change lots at once (d) use a new load each time
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
31. 31.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
34. 34.True or false: to use the same load is poor testing. (a) True (b) False
35. 35.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) guess, do not measure
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results
40. 40.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 310 g. What is the mean (average) load it held, in grams?

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