Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 578 · 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, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
2. 2.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change only one thing (d) record every result
4. 4.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) use a new load each time
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
6. 6.True or false: to change lots at once is poor testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
9. 9.True or false: to skip writing results is good testing. (a) True (b) False
10. 10.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
11. 11.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) test it only once (d) skip writing results
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) measure the same way (d) repeat each test
13. 13.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
15. 15.🧪 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 B (c) design C
16. 16.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 150 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
24. 24.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
25. 25.True or false: to test it only once is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
29. 29.True or false: to change only one thing is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 200 g, 50 g and 200 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to repeat each test is poor testing. (a) True (b) False
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) measure the same way (d) use the same load
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) guess, do not measure (d) hide a failed test
38. 38.True or false: to test it only once is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.True or false: to use a new load each time is good testing. (a) False (b) True

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