Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 406 · 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.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
2. 2.🧪 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
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
4. 4.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) change only one thing (d) change lots at once
7. 7.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🔍 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
9. 9.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.True or false: to measure the same way is good testing. (a) True (b) False
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
13. 13.True or false: to record every result is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) record every result (d) skip writing results
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) hide a failed test (d) use the same load
18. 18.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change only one thing (d) repeat each test
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
20. 20.True or false: to repeat each test is good testing. (a) True (b) False
21. 21.True or false: to hide a failed test is good testing. (a) True (b) False
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) measure the same way
24. 24.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) measure the same way (d) repeat each test
30. 30.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) measure the same way (d) test it only once
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
37. 37.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 380 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.🔢 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

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