Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 108 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
3. 3.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
7. 7.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
8. 8.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.🔢 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
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
15. 15.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) repeat each test
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
18. 18.True or false: to hide a failed test is poor testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.True or false: to skip writing results is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) guess, do not measure (d) use a new load each time
24. 24.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 230 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
26. 26.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
28. 28.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) change only one thing
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change lots at once (d) change only one thing
32. 32.🔢 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
33. 33.True or false: to record every result is poor testing. (a) False (b) True
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🔢 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
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) measure the same way (d) use a new load each time

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