Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 294 · 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.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
3. 3.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 390 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) guess, do not measure (d) repeat each test
5. 5.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) skip writing results
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) change only one thing (d) repeat each test
10. 10.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 340 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
12. 12.True or false: to change lots at once is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) repeat each test (d) skip writing results
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 240 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use a new load each time (d) record every result
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
23. 23.True or false: to use the same load is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 110 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.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
28. 28.True or false: to measure the same way is good testing. (a) False (b) True
29. 29.True or false: to guess, do not measure is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 430 g, 340 g and 250 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 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) test it only once (d) change only one thing
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
38. 38.True or false: to use the same load is poor testing. (a) False (b) True
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one

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