Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 381 · 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 is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
2. 2.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 400 g, 350 g and 300 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
9. 9.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change only one thing (d) change lots at once
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design B (c) design A
12. 12.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
14. 14.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
21. 21.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) guess, do not measure (d) hide a failed test
23. 23.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
24. 24.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
26. 26.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
27. 27.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change lots at once (d) change only one thing
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) measure the same way (d) use a new load each time
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) repeat each test (d) measure the same way
32. 32.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) use a new load each time
33. 33.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 410 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) test it only once (d) change only one thing
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 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
40. 40.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 220 g. What is the mean (average) load it held, in grams?

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