Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 142 · 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.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use the same load (d) guess, do not measure
2. 2.True or false: to test it only once is good testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) skip writing results
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) guess, do not measure (d) change only one thing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
6. 6.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
8. 8.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) repeat each test
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) hide a failed test
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
18. 18.🧪 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
19. 19.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
20. 20.True or false: to skip writing results is poor testing. (a) True (b) False
21. 21.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
23. 23.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use the same load (d) record every result
25. 25.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 360 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
30. 30.🧪 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 B (b) design A (c) design C
31. 31.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) test it only once (d) skip writing results
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.True or false: to use the same load is poor testing. (a) True (b) False
36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 240 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) measure the same way

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