Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 581 · 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 340 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
5. 5.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
7. 7.True or false: to guess, do not measure is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) choose and draw one
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
15. 15.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.True or false: to use a new load each time is good testing. (a) True (b) False
18. 18.🧪 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
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) repeat each test (d) record every result
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) skip writing results (d) record every result
21. 21.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) repeat each test
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
24. 24.True or false: to skip writing results is good testing. (a) False (b) True
25. 25.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
26. 26.True or false: to measure the same way is good testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) repeat each test (d) record every result
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use a new load each time (d) skip writing results
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🔢 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
31. 31.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use the same load (d) measure the same way
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) repeat each test (d) use a new load each time
35. 35.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) change lots at once
36. 36.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) skip writing results (d) hide a failed test
37. 37.🔢 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
38. 38.True or false: to record every result is poor testing. (a) True (b) False
39. 39.True or false: to change only one thing is poor testing. (a) False (b) True
40. 40.True or false: to repeat each test is good testing. (a) True (b) False

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