Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 201 · 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.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.True or false: to hide a failed test is poor testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) test it only once (d) skip writing results
5. 5.True or false: to use a new load each time is poor testing. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use a new load each time (d) use the same load
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) measure the same way
8. 8.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change lots at once (d) change only one thing
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) skip writing results (d) record every result
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) measure the same way (d) repeat each test
20. 20.True or false: to repeat each test is good testing. (a) True (b) False
21. 21.True or false: to use a new load each time is good testing. (a) False (b) True
22. 22.True or false: to record every result is poor testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 400 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to use the same load is good testing. (a) False (b) True
26. 26.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
27. 27.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use a new load each time (d) hide a failed test
29. 29.True or false: to change only one thing is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) sketch three ideas
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
36. 36.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins

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