Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 254 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
2. 2.True or false: to record every result is poor testing. (a) False (b) True
3. 3.🔢 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
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 440 g, 320 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 430 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) record every result (d) change lots at once
10. 10.True or false: to change only one thing is poor testing. (a) True (b) False
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
13. 13.🔍 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
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
15. 15.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
16. 16.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.True or false: to skip writing results is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 350 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
28. 28.🧪 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 strongest? (a) design A (b) design B (c) design C
29. 29.🧪 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 strongest? (a) design A (b) design C (c) design B
30. 30.True or false: to test it only once is poor testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
33. 33.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
34. 34.True or false: to record every result is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to hide a failed test is good testing. (a) False (b) True
38. 38.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 310 g, 300 g and 290 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?

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