Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 686 · 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 measure the same way? (a) poor testing (b) good testing
2. 2.True or false: to skip writing results is good testing. (a) True (b) False
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) record every result (d) measure the same way
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) measure the same way (d) record every result
6. 6.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) hide a failed test (d) use the same load
7. 7.🧪 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 C (b) design B (c) design A
8. 8.True or false: to change only one thing is poor testing. (a) True (b) False
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) guess, do not measure
14. 14.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
15. 15.🔢 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
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
17. 17.🔢 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
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
19. 19.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 320 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
22. 22.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) change only one thing
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
26. 26.True or false: to use a new load each time is good testing. (a) False (b) True
27. 27.True or false: to repeat each test is poor testing. (a) False (b) True
28. 28.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
29. 29.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) guess, do not measure (d) use a new load each time
30. 30.True or false: to use the same load is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
32. 32.True or false: to test it only once is poor testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) test it only once
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
35. 35.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
36. 36.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) change lots at once (d) measure the same way
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 100 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C

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