Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 413 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
2. 2.True or false: to use the same load is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
9. 9.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) guess, do not measure
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) repeat each test (d) change only one thing
12. 12.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
13. 13.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) record every result (d) change only one thing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design A (b) design B (c) design C
15. 15.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) use a new load each time
17. 17.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) use the same load (d) change lots at once
18. 18.True or false: to change lots at once is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
20. 20.True or false: to change lots at once is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to test it only once is poor testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 410 g, 300 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
26. 26.🧪 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 strongest? (a) design A (b) design C (c) design B
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to use a new load each time is poor testing. (a) True (b) False
29. 29.True or false: to repeat each test is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design B (c) design A
32. 32.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 310 g. What is the mean (average) load it held, in grams?
33. 33.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
34. 34.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
35. 35.True or false: to use a new load each time is good testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
38. 38.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
39. 39.🔢 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
40. 40.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 170 g. What is the mean (average) load it held, in grams?

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