Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 467 · 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.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
2. 2.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 330 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) record every result
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) skip writing results
7. 7.True or false: to change lots at once is poor testing. (a) True (b) False
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🧪 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 B (b) design C (c) design A
10. 10.True or false: to repeat each test is good testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
12. 12.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
13. 13.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) use a new load each time (d) test it only once
14. 14.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) record every result (d) guess, do not measure
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 140 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
20. 20.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
21. 21.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 440 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) hide a failed test
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
25. 25.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
26. 26.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
31. 31.🔢 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) sketch three ideas (d) read the challenge rules
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) test it only once (d) guess, do not measure
35. 35.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) skip writing results
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?

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