Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 58 · 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, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
4. 4.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) measure the same way
6. 6.True or false: to record every result is good testing. (a) False (b) True
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) test it only once
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
13. 13.True or false: to use the same load is good testing. (a) True (b) False
14. 14.🔢 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) sketch three ideas (d) read the challenge rules
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
16. 16.🧪 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 weakest? (a) design A (b) design B (c) design C
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) use the same load
19. 19.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 110 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
21. 21.True or false: to change lots at once is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.True or false: to measure the same way is good testing. (a) True (b) False
25. 25.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
26. 26.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) guess, do not measure (d) change lots at once
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) skip writing results (d) change only one thing
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🔢 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) build it with straws (d) choose and draw one
34. 34.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
35. 35.True or false: to record every result is poor testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) measure the same way
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) change lots at once

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