Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 9 · 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.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) load it with coins (d) strengthen the weak part
3. 3.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) record every result
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.True or false: to skip writing results is poor testing. (a) False (b) True
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
9. 9.🔢 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
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
11. 11.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) read the challenge rules
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change lots at once (d) skip writing results
13. 13.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
14. 14.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
16. 16.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
18. 18.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 270 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 420 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 410 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to use a new load each time is poor testing. (a) True (b) False
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) measure the same way
30. 30.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change lots at once (d) use a new load each time
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.True or false: to use a new load each time is good testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) measure the same way
36. 36.True or false: to change lots at once is good testing. (a) True (b) False
37. 37.True or false: to hide a failed test is poor testing. (a) True (b) False
38. 38.True or false: to guess, do not measure is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) test it only once (d) repeat each test

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