Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 832 · 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 skip writing results is good testing. (a) False (b) True
2. 2.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
3. 3.True or false: to test it only once is poor testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
10. 10.True or false: to change only one thing is good testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to hide a failed test is good testing. (a) True (b) False
16. 16.True or false: to change only one thing is poor testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
19. 19.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) guess, do not measure
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) choose and draw one
24. 24.🧪 A paper bridge was tested three times. It held 420 g, 330 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to change lots at once is good testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
28. 28.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
30. 30.🧪 A paper bridge was tested three times. It held 230 g, 60 g and 190 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
35. 35.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
36. 36.True or false: to use a new load each time is poor testing. (a) True (b) False
37. 37.🔢 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
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) test it only once (d) record every result
39. 39.🔢 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
40. 40.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 350 g. What is the mean (average) load it held, in grams?

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