Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 421 · 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 “build it with straws”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
2. 2.True or false: to change lots at once is poor testing. (a) False (b) True
3. 3.True or false: to use a new load each time is poor testing. (a) True (b) False
4. 4.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to repeat each test is poor testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.🔢 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) read the challenge rules (d) choose and draw one
10. 10.True or false: to use a new load each time is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) test it only once
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
19. 19.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
20. 20.True or false: to use the same load is poor testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) change lots at once (d) test it only once
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
23. 23.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🧪 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 strongest? (a) design B (b) design A (c) design C
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
28. 28.True or false: to measure the same way is poor testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) skip writing results (d) guess, do not measure
35. 35.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
38. 38.True or false: to guess, do not measure is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
40. 40.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 340 g. What is the mean (average) load it held, in grams?

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