Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 291 · 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.True or false: to measure the same way is poor testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
5. 5.🔢 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
6. 6.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 240 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) build it with straws
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 320 g and 350 g. What is the mean (average) load it held, in grams?
12. 12.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
15. 15.🔢 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
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
18. 18.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 340 g. What is the mean (average) load it held, in grams?
19. 19.🔢 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
20. 20.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) use a new load each time
21. 21.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) skip writing results (d) use a new load each time
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
23. 23.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) load it with coins
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
29. 29.True or false: to change lots at once is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 170 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) repeat each test (d) change lots at once
33. 33.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) guess, do not measure (d) record every result
35. 35.True or false: to repeat each test is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to hide a failed test is poor testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 90 g. What is the mean (average) load it held, in grams?

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