Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 579 · 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 “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) build it with straws
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
4. 4.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 320 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) test it only once (d) measure the same way
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.True or false: to hide a failed test is good testing. (a) False (b) True
13. 13.🧪 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
14. 14.True or false: to change only one thing is good testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
24. 24.True or false: to skip writing results is poor testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
27. 27.True or false: to change lots at once is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design B (b) design A (c) design C
30. 30.True or false: to record every result is poor testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
33. 33.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) skip writing results (d) hide a failed test
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) use the same load (d) record every result
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
38. 38.True or false: to use the same load is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

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