Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 851 · 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 repeat each test is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change lots at once (d) guess, do not measure
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change lots at once (d) change only one thing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
7. 7.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🔢 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
12. 12.True or false: to record every result is poor testing. (a) True (b) False
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
14. 14.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
17. 17.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) guess, do not measure (d) use the same load
18. 18.🔍 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
19. 19.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) measure the same way
23. 23.🔢 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
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
25. 25.🧪 A paper bridge was tested three times. It held 360 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 340 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change only one thing is poor testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
33. 33.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) record every result
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
37. 37.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change only one thing (d) use a new load each time
38. 38.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) build it with straws (d) read the challenge rules
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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