Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 553 · 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: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) measure the same way
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
5. 5.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
10. 10.True or false: to measure the same way is good testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.True or false: to use the same load is good testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 350 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
17. 17.True or false: to measure the same way is poor testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) use a new load each time (d) hide a failed test
19. 19.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) skip writing results (d) guess, do not measure
22. 22.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) choose and draw one
24. 24.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) change only one thing (d) test it only once
26. 26.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) record every result (d) change lots at once
28. 28.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) measure the same way
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) guess, do not measure
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
35. 35.True or false: to guess, do not measure is poor testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design B (b) design A (c) design C
37. 37.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) choose and draw one
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design A (b) design C (c) design B

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