Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 565 · 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 test it only once is poor testing. (a) False (b) True
2. 2.True or false: to use the same load is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
4. 4.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 360 g. What is the mean (average) load it held, in grams?
5. 5.🧪 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 weakest? (a) design A (b) design C (c) design B
6. 6.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
7. 7.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
11. 11.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) repeat each test (d) change only one thing
12. 12.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
14. 14.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
15. 15.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
16. 16.True or false: to hide a failed test is good testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) use the same load (d) test it only once
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
20. 20.🧪 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 C (b) design A (c) design B
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
24. 24.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) use a new load each time
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
30. 30.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
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 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) skip writing results (d) change only one thing
35. 35.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
36. 36.True or false: to record every result is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) change only one thing (d) repeat each test
38. 38.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 110 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
40. 40.True or false: to repeat each test is poor testing. (a) False (b) True

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