Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 589 · 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) use a new load each time (b) hide a failed test (c) guess, do not measure (d) use the same load
2. 2.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
4. 4.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) change lots at once
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) skip writing results
13. 13.True or false: to record every result is poor testing. (a) True (b) False
14. 14.🔢 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
15. 15.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
20. 20.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
22. 22.True or false: to hide a failed test is good testing. (a) False (b) True
23. 23.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
26. 26.True or false: to measure the same way is poor testing. (a) True (b) False
27. 27.True or false: to change only one thing is poor testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
29. 29.True or false: to guess, do not measure is good testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
33. 33.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.True or false: to use the same load is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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