Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 635 · 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.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
3. 3.True or false: to hide a failed test is poor testing. (a) False (b) True
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.True or false: to use a new load each time is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.True or false: to use the same load is poor testing. (a) False (b) True
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) load it with coins
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.True or false: to record every result is good testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
16. 16.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
17. 17.🧪 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
18. 18.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🔢 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
21. 21.True or false: to change lots at once is good testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) guess, do not measure (d) use the same load
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) change lots at once
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) sketch three ideas
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
28. 28.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) record every result (d) use a new load each time
31. 31.🧪 A paper bridge was tested three times. It held 380 g, 190 g and 300 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) hide a failed test
36. 36.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
38. 38.True or false: to measure the same way is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing

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