Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 815 · 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.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) test it only once
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) test it only once
10. 10.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
11. 11.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
12. 12.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
13. 13.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 410 g, 340 g and 270 g. What is the mean (average) load it held, in grams?
15. 15.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
18. 18.True or false: to hide a failed test is good testing. (a) True (b) False
19. 19.True or false: to skip writing results is good testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) read the challenge rules
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
23. 23.True or false: to use a new load each time is poor testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
25. 25.🧪 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
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.True or false: to change only one thing is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use the same load (d) record every result
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.True or false: to change lots at once is good testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design C (b) design A (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) skip writing results
36. 36.True or false: to use a new load each time is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) skip writing results
38. 38.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?

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