Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 629 · 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) guess, do not measure (b) skip writing results (c) hide a failed test (d) record every result
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) repeat each test
4. 4.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) repeat each test (d) change only one thing
5. 5.True or false: to change only one thing is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 320 g and 360 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 240 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
11. 11.True or false: to measure the same way is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) build it with straws
14. 14.🧪 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 A (b) design C (c) design B
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
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.True or false: to hide a failed test is good testing. (a) True (b) False
18. 18.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
19. 19.True or false: to skip writing results is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) hide a failed test (d) skip writing results
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.True or false: to measure the same way is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) measure the same way
26. 26.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) use the same load (d) change only one thing
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
30. 30.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
31. 31.True or false: to skip writing results is good testing. (a) False (b) True
32. 32.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
33. 33.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) record every result (d) measure the same way
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🧪 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
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.True or false: to use the same load is good testing. (a) True (b) False
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🧪 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 weakest? (a) design B (b) design C (c) design A

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