Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 791 · 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 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
2. 2.True or false: to change lots at once is good testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
6. 6.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
7. 7.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
8. 8.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) record every result
9. 9.🧪 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?
10. 10.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 320 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) guess, do not measure (d) hide a failed test
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
14. 14.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
16. 16.True or false: to measure the same way is poor testing. (a) True (b) False
17. 17.True or false: to skip writing results is poor testing. (a) False (b) True
18. 18.🔢 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) read the challenge rules (d) load it with coins
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) repeat each test
23. 23.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) measure the same way (d) change only one thing
24. 24.True or false: to use a new load each time is good testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
28. 28.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
30. 30.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 370 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
32. 32.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
33. 33.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
34. 34.True or false: to use a new load each time is poor testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) guess, do not measure (d) measure the same way

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