Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 877 · 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, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) repeat each test
5. 5.🧪 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 weakest? (a) design A (b) design C (c) design B
6. 6.True or false: to repeat each test is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) record every result (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) change lots at once
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
11. 11.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) read the challenge rules (d) build it with straws
17. 17.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 250 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change only one thing (d) guess, do not measure
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) hide a failed test (d) test it only once
21. 21.🧪 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 C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 180 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.True or false: to test it only once is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
29. 29.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) record every result (d) use the same load
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
34. 34.True or false: to use a new load each time is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.True or false: to repeat each test is good testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.True or false: to measure the same way is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing

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