Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 536 · 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 guess, do not measure? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
3. 3.🔢 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
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) choose and draw one
10. 10.🧪 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 weakest? (a) design B (b) design C (c) design A
11. 11.True or false: to hide a failed test is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) measure the same way
13. 13.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 370 g. What is the mean (average) load it held, in grams?
15. 15.🧪 A paper bridge was tested three times. It held 380 g, 220 g and 300 g. What is the mean (average) load it held, in grams?
16. 16.🧪 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 C (b) design A (c) design B
17. 17.True or false: to change lots at once is good testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) build it with straws
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) repeat each test
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is poor testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) use the same load (d) test it only once
23. 23.True or false: to use the same load is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) use a new load each time
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
30. 30.🔢 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) load it with coins
31. 31.True or false: to measure the same way is good testing. (a) True (b) False
32. 32.🧪 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
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) record every result (d) change only one thing
36. 36.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
37. 37.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) skip writing results
39. 39.True or false: to measure the same way is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one

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