Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 861 · 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.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) skip writing results
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
4. 4.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) guess, do not measure (d) record every result
9. 9.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) change lots at once
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
17. 17.True or false: to use a new load each time is good testing. (a) False (b) True
18. 18.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 370 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
21. 21.True or false: to change only one thing is poor testing. (a) True (b) False
22. 22.True or false: to guess, do not measure is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) use the same load
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
29. 29.True or false: to test it only once is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
31. 31.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
32. 32.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
33. 33.True or false: to use the same load is poor testing. (a) False (b) True
34. 34.🧪 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 B (b) design C (c) design A
35. 35.True or false: to change lots at once is poor testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
38. 38.🔍 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
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 410 g. What is the mean (average) load it held, in grams?

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