Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 305 · 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.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) test it only once
2. 2.🧪 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
3. 3.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
4. 4.🧪 A paper bridge was tested three times. It held 290 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) change lots at once
6. 6.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 300 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) choose and draw one
19. 19.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 120 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) test it only once (d) skip writing results
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) measure the same way (d) change lots at once
23. 23.True or false: to use a new load each time is good testing. (a) False (b) True
24. 24.True or false: to change lots at once is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
32. 32.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
33. 33.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 90 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
36. 36.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.🔢 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
39. 39.True or false: to skip writing results is poor testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas

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