Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 515 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
2. 2.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 290 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) hide a failed test (d) repeat each test
4. 4.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to change lots at once is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
7. 7.True or false: to record every result is poor testing. (a) False (b) True
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.True or false: to guess, do not measure is good testing. (a) False (b) True
10. 10.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) repeat each test (d) change only one thing
12. 12.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
13. 13.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) skip writing results
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
19. 19.True or false: to change only one thing is poor testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 360 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
23. 23.True or false: to repeat each test is poor testing. (a) True (b) False
24. 24.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
26. 26.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.True or false: to change lots at once is good testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) use the same load (d) repeat each test
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) change only one thing
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) record every result
34. 34.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) repeat each test (d) record every result
35. 35.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
37. 37.🧪 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 A (b) design B (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins

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