Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 233 · 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 comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
2. 2.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) use a new load each time
5. 5.True or false: to change only one thing is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.True or false: to measure the same way is poor testing. (a) False (b) True
8. 8.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
10. 10.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
17. 17.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
19. 19.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 390 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 300 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change lots at once is poor testing. (a) True (b) False
23. 23.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
25. 25.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 90 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to measure the same way is good testing. (a) True (b) False
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.True or false: to record every result is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🔢 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) load it with coins (d) sketch three ideas
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) test it only once (d) guess, do not measure
38. 38.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
39. 39.True or false: to change only one thing is poor testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?

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