Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 329 · 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.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) guess, do not measure
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
5. 5.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
7. 7.True or false: to change lots at once is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 330 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) load it with coins
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 170 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 410 g, 320 g and 260 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change only one thing is poor testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) guess, do not measure (d) change lots at once
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
22. 22.🔢 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
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) sketch three ideas
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 330 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 420 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) measure the same way
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) change only one thing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use the same load (d) change only one thing
31. 31.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.True or false: to measure the same way is poor testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
40. 40.True or false: to use the same load is good testing. (a) True (b) False

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