Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 731 · 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 guess, do not measure is poor testing. (a) False (b) True
2. 2.🔢 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
3. 3.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) use the same load (d) measure the same way
5. 5.True or false: to change only one thing is good testing. (a) False (b) True
6. 6.True or false: to test it only once is good testing. (a) False (b) True
7. 7.True or false: to hide a failed test is good testing. (a) False (b) True
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) build it with straws
15. 15.True or false: to change only one thing is poor testing. (a) False (b) True
16. 16.🔢 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
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
19. 19.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) read the challenge rules
21. 21.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) test it only once (d) change only one thing
24. 24.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
29. 29.True or false: to change lots at once is poor testing. (a) True (b) False
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
32. 32.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to use the same load is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) build it with straws
36. 36.🧪 A paper bridge was tested three times. It held 360 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
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.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) skip writing results (d) test it only once

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