Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 309 · 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) strengthen the weak part (c) build it with straws (d) read the challenge rules
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to repeat each test is good testing. (a) True (b) False
4. 4.True or false: to use the same load is good testing. (a) True (b) False
5. 5.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) measure the same way (d) change only one thing
10. 10.True or false: to test it only once is poor testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.True or false: to repeat each test is poor testing. (a) True (b) False
15. 15.True or false: to use a new load each time is good testing. (a) False (b) True
16. 16.🔢 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
17. 17.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) change only one thing
19. 19.🔢 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
20. 20.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use the same load (d) skip writing results
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
22. 22.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) skip writing results (d) repeat each test
24. 24.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
26. 26.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
27. 27.🧪 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 C (b) design B (c) design A
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
30. 30.True or false: to use the same load is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🧪 A paper bridge was tested three times. It held 270 g, 70 g and 170 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to record every result is poor testing. (a) False (b) True
35. 35.🔢 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
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) guess, do not measure (d) change only one thing
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
39. 39.🔍 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
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C

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