Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 643 · 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.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) record every result
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
3. 3.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
4. 4.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) hide a failed test (d) change lots at once
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) measure the same way
9. 9.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.True or false: to repeat each test is poor testing. (a) False (b) True
13. 13.True or false: to use the same load is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use the same load (d) test it only once
15. 15.True or false: to guess, do not measure is poor testing. (a) True (b) False
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 190 g and 210 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
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 B (b) design C (c) design A
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) repeat each test (d) change lots at once
23. 23.True or false: to test it only once is poor testing. (a) True (b) False
24. 24.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
26. 26.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
29. 29.🔢 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
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) change lots at once (d) use a new load each time
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
38. 38.True or false: to repeat each test is good testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 100 g and 160 g. What is the mean (average) load it held, in grams?

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