Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 366 · 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.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design C (b) design B (c) design A
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) repeat each test
6. 6.🧪 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
7. 7.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) measure the same way (d) test it only once
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) skip writing results (d) change lots at once
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
13. 13.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
14. 14.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
16. 16.🔢 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
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.True or false: to use a new load each time is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
23. 23.True or false: to hide a failed test is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) record every result (d) repeat each test
25. 25.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to measure the same way is poor testing. (a) True (b) False
31. 31.True or false: to change lots at once is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
34. 34.🔢 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
35. 35.True or false: to skip writing results is poor testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) repeat each test (d) measure the same way
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
38. 38.🧪 A paper bridge was tested three times. It held 310 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 260 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing

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