Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 177 · 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 comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
2. 2.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
3. 3.🧪 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 strongest? (a) design A (b) design C (c) design B
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🔢 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
7. 7.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
8. 8.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to guess, do not measure is good testing. (a) False (b) True
11. 11.True or false: to change only one thing is poor testing. (a) False (b) True
12. 12.🧪 A paper bridge was tested three times. It held 430 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
13. 13.🔢 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
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) change lots at once
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) change lots at once (d) test it only once
17. 17.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
18. 18.True or false: to measure the same way is good testing. (a) True (b) False
19. 19.🧪 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 C (c) design B
20. 20.True or false: to use a new load each time is good testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) use a new load each time (d) test it only once
24. 24.True or false: to test it only once is good testing. (a) False (b) True
25. 25.True or false: to use the same load is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use a new load each time (d) hide a failed test
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use the same load (d) repeat each test
35. 35.🧪 A paper bridge was tested three times. It held 370 g, 310 g and 370 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
37. 37.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design C (b) design A (c) design B
40. 40.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing

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