Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 888 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
5. 5.True or false: to change only one thing is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) change only one thing
10. 10.True or false: to test it only once is poor testing. (a) True (b) False
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🧪 A paper bridge was tested three times. It held 430 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.True or false: to use the same load is good testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) use the same load (d) skip writing results
19. 19.True or false: to skip writing results is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) hide a failed test (d) use a new load each time
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
22. 22.🧪 A paper bridge was tested three times. It held 150 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
23. 23.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
26. 26.True or false: to record every result is poor testing. (a) True (b) False
27. 27.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
28. 28.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
32. 32.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) guess, do not measure
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
36. 36.True or false: to skip writing results is good testing. (a) False (b) True
37. 37.True or false: to use a new load each time is poor testing. (a) True (b) False
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) test it only once (d) use the same load

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