Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 555 · 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) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
3. 3.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) use a new load each time
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
10. 10.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 290 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 120 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) good testing (b) poor testing
14. 14.True or false: to record every result is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) skip writing results
16. 16.True or false: to change only one thing is poor testing. (a) True (b) False
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) test it only once (d) repeat each test
19. 19.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) strengthen the weak part
22. 22.True or false: to use a new load each time is good testing. (a) False (b) True
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) guess, do not measure (d) use the same load
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.True or false: to repeat each test is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) repeat each test (d) change only one thing
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
33. 33.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 190 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
37. 37.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) change lots at once
39. 39.True or false: to record every result is good testing. (a) False (b) True
40. 40.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them

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