Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 149 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
5. 5.True or false: to use the same load is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use the same load (d) change only one thing
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
9. 9.True or false: to guess, do not measure is good testing. (a) True (b) False
10. 10.True or false: to change only one thing is poor testing. (a) False (b) True
11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) repeat each test
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
19. 19.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) use the same load
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) use the same load
24. 24.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to change lots at once is good testing. (a) True (b) False
28. 28.🔢 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
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 370 g, 350 g and 330 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
32. 32.True or false: to measure the same way is good testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) repeat each test (d) test it only once
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.True or false: to use a new load each time is good testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
38. 38.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 200 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) change only one thing (c) use a new load each time (d) skip writing results

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