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Flashcards

1. Foundation

Ella Davies GNAV Inglês 62 flashcards

Flashcards do conjunto (62)

  1. 1what does the solar system consist of ?the sun, eight planets and a large number of asteroids and comets
  2. 2in which way does the earth orbit the sun?in an anticlockwise elliptical orbit
  3. 3at what angle is the earths spin axis inclined to the orbital plane66.5˚
  4. 4Aphelionpoint of orbit when the earth is furthest away from the sun (July)
  5. 5EclipticApparent path of the sun around the earth
  6. 6Equinoxeswhen the sun crosses the plane of the equinoctial, twice a year during march and September
  7. 7Obliquity of the ecliptic23.5˚
    angle between the plane of ecliptic and the plane of the equinoctial
  8. 8Perihelionpoint of orbit where the earth is closest to the sun (early January)
  9. 9Plane of the Eclipticthe imaginary plane containing the earths orbit around the sun, means it does not move up or down, it tays on a plane
  10. 10Plane of the equinoctialplane of the equator extended into space
  11. 11Solsticeoccur twie a year, when the sun reaches its northern most and southern most latitudes
  12. 12peri means what in frenchclose
  13. 13what is the real shape of the earthEllipsoid or an Oblate Spheroid
  14. 14The flattening of the earth at the poles is known as whatellipticity or compressibility of the earth
  15. 15what is the equation of compressibility(semi major - semi minor axis) / semi major axis = 1/300
  16. 16length of semi major axis in nm~3444 nautical miles
  17. 17distance of semi major axis in km6357 km
  18. 18how much longer the equatorial radius than the polar radius11 nm
  19. 19axis of rotationthe north and south poles define the axis of the earth's spin
  20. 20the polesextremities of the spin axis about which the earth rotates
  21. 21what can you say about all directions when at the north poleall directions are south
  22. 22What do we call N, E, S, Wcardinal directions
  23. 23define eastthe direction in which the earth rotates
  24. 24what are NE, SE, SW, NW known asthe inter cardinal directions
  25. 25What is a great circlea circle on the centre of the earth whose centre and radius are the same to that of the earths
  26. 26what can you say about a great circleit is the shortest distance between any two points
  27. 27what can you say about radio wave in relation to great circlesradio waves travel the direction of great circles
  28. 28what are small circlesa circle on the centre of the earth, whose radius and centre are not the same as the earths
  29. 29what is the equatora great circle
  30. 30what does the equator split the earth intohemispheres
  31. 31what are the names of the two hemispheresnorthern hemisphere and southern hemisphere
  32. 32what can you say about the spin axis and plane of the equatorthey are perpendicular
  33. 33which direction do parallels of latitude lie oneast west direction
  34. 34what do latitudes definepositions north or south of the equator
  35. 35what is the highest latitude90˚ N or S
  36. 36what is a meridianlines that draw together poles
  37. 37each meridian has a whatantimeridian
  38. 38what are meridians used to definelongitude
  39. 39what is the greenwich meridian sometimes calledthe prime meridian
  40. 40what is the prime meridian sometimes called000E/W meridian
  41. 41meridian + antimeridian =a great circle
  42. 42define latitudeangular distance from the equator to a point measured in N or S
  43. 43define longitudethe shorter angular distance along the equator between the greenwich meridian and the meridian through the point
  44. 44define bearingthe direction of a point/ object measured to/from another object
  45. 45define heading sdirection in which the nose of the aircraft is pointing
  46. 46define magnetic directionhorizontal direction indicated from a freely suspended magnet influenced only by the earths magnetic field
  47. 47define the reciprocalopposite direction to current direction +/- 180˚
  48. 48define relative bearingbearings referenced from the nose of the aircraft
  49. 49define rhumb linea line that cuts all meridians at the same angle, line of constant direction
  50. 50define track or courseactual path of the aircraft over the earth
  51. 51define true directionwhere the north datum is the direction of the geographical north pole
  52. 52define variationangel between north and true north
  53. 53define a nautical milelength of a great circle arc on the surface of the earth, subtending at an angle of one minute at the centre of the earth
  54. 54define ICAO NMdistance of 1852 m
  55. 55define a standard NM6080 ft
  56. 56define a statute mile1760 yards
  57. 57define a KMdistance equal to 1/10 000 of the distance from the equator to the poles
  58. 58what is the circumference of the earth21 600 NM
  59. 59what is the distance associated with one degree on the earths surface60 NM
  60. 60what is the distance associated with 1 minute on the earths surface1 NM
  61. 61when will you have more detail in regard to ratioswhen the numbers are closer in value
  62. 621:500 vs 1:200 which is more detailed1:200

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GNAV FlashCards sobre 1. Foundation, criado por Ella Davies em 06-02-2018.
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Ella Davies
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