Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 981 · 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 record every result? (a) poor testing (b) good testing
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) use a new load each time (d) repeat each test
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
6. 6.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) record every result (d) guess, do not measure
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design C (b) design A (c) design B
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) skip writing results (d) change lots at once
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 400 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) hide a failed test
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) test it only once
22. 22.True or false: to test it only once is poor testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use a new load each time (d) hide a failed test
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
28. 28.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
31. 31.🧪 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 strongest? (a) design B (b) design A (c) design C
32. 32.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) repeat each test
33. 33.True or false: to record every result is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) sketch three ideas
35. 35.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use the same load is poor testing. (a) True (b) False
38. 38.True or false: to test it only once is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) measure the same way
40. 40.True or false: to guess, do not measure is poor testing. (a) False (b) True

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