Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 453 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.True or false: to hide a failed test is poor testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change lots at once (d) measure the same way
9. 9.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) guess, do not measure (d) use the same load
10. 10.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
11. 11.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.True or false: to test it only once is good testing. (a) False (b) True
14. 14.🧪 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
15. 15.🔢 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
16. 16.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 120 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 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
18. 18.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) hide a failed test (d) change only one thing
22. 22.🔢 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
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
24. 24.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) test it only once
31. 31.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
32. 32.🔢 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
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing

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