Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 318 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) load it with coins
3. 3.True or false: to use a new load each time is good testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) sketch three ideas
5. 5.True or false: to use the same load is good testing. (a) True (b) False
6. 6.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) build it with straws
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) test it only once (d) use a new load each time
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
12. 12.True or false: to change lots at once is good testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.True or false: to record every result is good testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
20. 20.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.True or false: to change only one thing is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) test it only once (d) change lots at once
24. 24.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) guess, do not measure (d) use the same load
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
26. 26.True or false: to use the same load is poor testing. (a) False (b) True
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design A (b) design C (c) design B
28. 28.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) use a new load each time
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) hide a failed test
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
33. 33.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) guess, do not measure
36. 36.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) hide a failed test
37. 37.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🔢 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
40. 40.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing

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