Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 944 · 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.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) measure the same way (d) change only one thing
2. 2.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
5. 5.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) guess, do not measure (d) repeat each test
8. 8.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
11. 11.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
12. 12.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) repeat each test (d) change only one thing
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) hide a failed test
24. 24.🧪 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
25. 25.🧪 A paper bridge was tested three times. It held 210 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
28. 28.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use the same load (d) hide a failed test
35. 35.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
37. 37.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) sketch three ideas
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) repeat each test
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A

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