Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 399 · 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 change only one thing is good testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 370 g. What is the mean (average) load it held, in grams?
3. 3.🧪 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 B (b) design C (c) design A
4. 4.🔢 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
5. 5.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) change lots at once
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.True or false: to change only one thing is poor testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) change only one thing
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) measure the same way (d) record every result
11. 11.🧪 A paper bridge was tested three times. It held 290 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 130 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) change only one thing
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) hide a failed test (d) use the same load
17. 17.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
18. 18.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
21. 21.True or false: to measure the same way is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
23. 23.True or false: to skip writing results is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change lots at once (d) use a new load each time
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) measure the same way (d) skip writing results
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
32. 32.True or false: to change lots at once is good testing. (a) False (b) True
33. 33.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
34. 34.🧪 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
35. 35.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) record every result (d) repeat each test
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) use a new load each time

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