Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 464 · 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.True or false: to measure the same way is good testing. (a) True (b) False
2. 2.True or false: to change only one thing is good testing. (a) False (b) True
3. 3.True or false: to repeat each test is poor testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) use the same load
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
8. 8.True or false: to use a new load each time is good testing. (a) True (b) False
9. 9.True or false: to guess, do not measure is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) test it only once (d) skip writing results
15. 15.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) use the same load
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) hide a failed test (d) guess, do not measure
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 240 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.🧪 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
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) sketch three ideas
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) load it with coins
32. 32.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
33. 33.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 90 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
35. 35.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) use a new load each time
37. 37.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) measure the same way (d) skip writing results
38. 38.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
39. 39.🧪 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 strongest? (a) design C (b) design B (c) design A
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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