Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 769 · 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.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
2. 2.🔢 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) load it with coins
3. 3.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) repeat each test (d) change only one thing
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 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
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 190 g, 50 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to skip writing results is poor testing. (a) True (b) False
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
12. 12.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) measure the same way
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
16. 16.True or false: to measure the same way is good testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) skip writing results (d) use a new load each time
19. 19.🧪 A paper bridge was tested three times. It held 170 g, 70 g and 240 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
24. 24.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
25. 25.🔢 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
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.True or false: to use a new load each time is good testing. (a) True (b) False
31. 31.True or false: to repeat each test is poor testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 260 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 330 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
38. 38.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) repeat each test
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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