Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 808 · 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 use the same load is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
4. 4.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
6. 6.True or false: to use a new load each time is poor testing. (a) False (b) True
7. 7.True or false: to use the same load is poor testing. (a) True (b) False
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
9. 9.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
12. 12.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 370 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) load it with coins
16. 16.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
19. 19.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
20. 20.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) change only one thing
25. 25.🧪 A paper bridge was tested three times. It held 410 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use a new load each time (d) test it only once
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
29. 29.🔢 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
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
34. 34.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
35. 35.True or false: to hide a failed test is good testing. (a) False (b) True
36. 36.🔢 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) load it with coins
37. 37.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
38. 38.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) use the same load (d) change only one thing

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