Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 446 · 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) record every result (b) hide a failed test (c) measure the same way (d) repeat each test
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) change only one thing
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
4. 4.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 260 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to measure the same way is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
7. 7.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
9. 9.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) use a new load each time
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) skip writing results
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.True or false: to hide a failed test is good testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) change only one thing (d) repeat each test
24. 24.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change only one thing (d) guess, do not measure
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) change lots at once
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
38. 38.🔢 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
39. 39.True or false: to hide a failed test is poor testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A

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