Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 46 · 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 skip writing results? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) skip writing results
3. 3.True or false: to use a new load each time is good testing. (a) True (b) False
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
5. 5.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) guess, do not measure
6. 6.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 360 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.True or false: to change only one thing is poor testing. (a) False (b) True
9. 9.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
10. 10.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.True or false: to change lots at once is poor testing. (a) True (b) False
14. 14.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
16. 16.🔢 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
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) use a new load each time (d) repeat each test
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) test it only once (d) repeat each test
27. 27.🧪 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
28. 28.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) skip writing results
29. 29.True or false: to measure the same way is good testing. (a) True (b) False
30. 30.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) measure the same way (d) guess, do not measure
35. 35.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) change only one thing (d) guess, do not measure
36. 36.True or false: to record every result is poor testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules

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