Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 485 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
2. 2.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
3. 3.True or false: to record every result is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) skip writing results (d) measure the same way
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 190 g and 260 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
8. 8.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
9. 9.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
10. 10.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change lots at once (d) repeat each test
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
17. 17.True or false: to use a new load each time is poor testing. (a) False (b) True
18. 18.True or false: to change only one thing is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
22. 22.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
23. 23.True or false: to change lots at once is good testing. (a) False (b) True
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) measure the same way (d) change only one thing
27. 27.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) skip writing results
30. 30.True or false: to change lots at once is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 320 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
34. 34.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.True or false: to guess, do not measure is good testing. (a) False (b) True
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) change lots at once

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