Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 510 · 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.True or false: to repeat each test is poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 300 g. What is the mean (average) load it held, in grams?
3. 3.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
4. 4.True or false: to skip writing results is poor testing. (a) False (b) True
5. 5.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
8. 8.🔢 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
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) skip writing results
10. 10.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
14. 14.True or false: to use a new load each time is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 340 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.True or false: to use the same load is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) guess, do not measure (d) hide a failed test
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.True or false: to test it only once is poor testing. (a) True (b) False
26. 26.True or false: to test it only once is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) load it with coins
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use the same load (d) change only one thing
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) record every result
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) measure the same way
36. 36.🧪 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 weakest? (a) design B (b) design C (c) design A
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
40. 40.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room

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