Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 199 · 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.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
2. 2.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
3. 3.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) use a new load each time
6. 6.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) test it only once (d) repeat each test
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
10. 10.🔢 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
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 340 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 290 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) repeat each test
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) use the same load
18. 18.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
19. 19.🧪 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
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
23. 23.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) use a new load each time (d) record every result
24. 24.True or false: to guess, do not measure is good testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
29. 29.True or false: to repeat each test is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 360 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
32. 32.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
36. 36.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
38. 38.True or false: to use a new load each time is poor testing. (a) True (b) False
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🧪 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 strongest? (a) design C (b) design A (c) design B

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