Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 289 · 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 290 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use a new load each time (d) guess, do not measure
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) measure the same way (d) repeat each test
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) sketch three ideas
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
9. 9.True or false: to skip writing results is poor testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 360 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to measure the same way is good testing. (a) True (b) False
12. 12.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change only one thing (d) use a new load each time
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change only one thing (d) record every result
19. 19.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
20. 20.True or false: to change only one thing is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) repeat each test
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
26. 26.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
27. 27.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
28. 28.True or false: to guess, do not measure is good testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
30. 30.True or false: to measure the same way is poor testing. (a) False (b) True
31. 31.True or false: to change lots at once is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) build it with straws
34. 34.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) repeat each test (d) record every result
35. 35.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 100 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
39. 39.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?

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