Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 522 · 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 change lots at once? (a) good testing (b) poor testing
2. 2.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
3. 3.🧪 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
4. 4.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design C (b) design A (c) design B
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
8. 8.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) repeat each test (d) skip writing results
9. 9.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) use the same load (d) guess, do not measure
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) strengthen the weak part
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.True or false: to test it only once is good testing. (a) False (b) True
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) sketch three ideas
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) test it only once
19. 19.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
20. 20.True or false: to record every result is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to use the same load is good testing. (a) True (b) False
25. 25.True or false: to hide a failed test is good testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 250 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to skip writing results is poor testing. (a) True (b) False
31. 31.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
32. 32.True or false: to use a new load each time is good testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) measure the same way (d) use the same load
34. 34.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
35. 35.True or false: to change only one thing is poor testing. (a) True (b) False
36. 36.True or false: to use a new load each time is poor testing. (a) False (b) True
37. 37.🔢 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) strengthen the weak part (d) read the challenge rules
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
39. 39.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) build it with straws

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