Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 960 · 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 change only one thing is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) change only one thing
3. 3.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) strengthen the weak part
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) record every result
5. 5.🧪 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 strongest? (a) design B (b) design A (c) design C
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
8. 8.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) skip writing results (d) measure the same way
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
10. 10.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
13. 13.True or false: to record every result is good testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) change only one thing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
17. 17.True or false: to measure the same way is poor testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 430 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change lots at once (d) hide a failed test
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) change lots at once
22. 22.🧪 A paper bridge was tested three times. It held 410 g, 340 g and 270 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) test it only once
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) hide a failed test
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 70 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
39. 39.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas

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