Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 392 · 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) measure the same way (b) record every result (c) skip writing results (d) change only one thing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.True or false: to change lots at once is good testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) hide a failed test
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
9. 9.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
13. 13.🧪 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
14. 14.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) hide a failed test (d) change only one thing
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🔢 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
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) change lots at once
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.True or false: to test it only once is good testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 180 g, 60 g and 210 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
31. 31.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) measure the same way
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
36. 36.True or false: to use the same load is poor testing. (a) True (b) False
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
38. 38.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) repeat each test
40. 40.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing

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