Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 347 · 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.True or false: to test it only once is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) test it only once
3. 3.🔢 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) strengthen the weak part (d) sketch three ideas
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
7. 7.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design B (b) design A (c) design C
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) record every result (d) measure the same way
11. 11.True or false: to change lots at once is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
13. 13.🧪 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 B (b) design C (c) design A
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
17. 17.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
19. 19.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 370 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 400 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.True or false: to guess, do not measure is poor testing. (a) False (b) True
27. 27.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 260 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
32. 32.🔢 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) build it with straws (d) load it with coins
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) record every result
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
36. 36.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) test it only once (d) change lots at once
38. 38.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) test it only once (d) change lots at once
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part

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