Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 524 · 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.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to test it only once is good testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) build it with straws (d) strengthen the weak part
5. 5.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
9. 9.True or false: to skip writing results is good testing. (a) False (b) True
10. 10.True or false: to change lots at once is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
13. 13.🧪 A paper bridge was tested three times. It held 310 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
16. 16.True or false: to guess, do not measure is good testing. (a) False (b) True
17. 17.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
18. 18.🔢 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
19. 19.True or false: to use the same load is poor testing. (a) True (b) False
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) use a new load each time (d) skip writing results
24. 24.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) measure the same way (d) hide a failed test
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change only one thing (d) measure the same way
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to change lots at once is good testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.True or false: to use a new load each time is poor testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) hide a failed test (d) record every result
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) repeat each test (d) measure the same way
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
35. 35.🧪 A paper bridge was tested three times. It held 410 g, 300 g and 250 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) two (b) none (c) all of them (d) one
37. 37.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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