Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 869 · 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, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
3. 3.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
4. 4.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 330 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) hide a failed test
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) record every result (d) change only one thing
12. 12.True or false: to hide a failed test is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
15. 15.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
18. 18.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
19. 19.True or false: to use the same load is good testing. (a) False (b) True
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) skip writing results (d) test it only once
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 210 g and 180 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
28. 28.🔢 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
29. 29.True or false: to repeat each test is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) guess, do not measure
31. 31.True or false: to guess, do not measure is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) record every result (d) repeat each test
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
36. 36.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
37. 37.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 110 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B

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