Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 511 · 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 poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.True or false: to guess, do not measure is good testing. (a) True (b) False
7. 7.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A
11. 11.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.True or false: to record every result is poor testing. (a) True (b) False
16. 16.True or false: to use a new load each time is poor testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🧪 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
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
21. 21.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) use the same load (d) record every result
23. 23.🔢 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
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.True or false: to change only one thing is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.True or false: to use the same load is good testing. (a) True (b) False
34. 34.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.True or false: to change lots at once is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) test it only once (d) repeat each test
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 310 g. What is the mean (average) load it held, in grams?

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