Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 747 · 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.True or false: to change lots at once is good testing. (a) True (b) False
2. 2.🔢 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
3. 3.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) skip writing results (d) change lots at once
4. 4.🧪 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
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 120 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) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
11. 11.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) read the challenge rules
14. 14.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 330 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) measure the same way
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) test it only once
20. 20.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
21. 21.True or false: to record every result is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
23. 23.True or false: to use a new load each time is poor testing. (a) False (b) True
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 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) load it with coins (b) strengthen the weak part
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) hide a failed test
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
36. 36.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) measure the same way
38. 38.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
39. 39.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
40. 40.True or false: to hide a failed test is poor testing. (a) True (b) False

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