地理综合要点1（Geography 1 points）.docVIP

地理综合要点1（Geography 1 points） One, world geography 1. of the earth (1) the earth and the globe 1. the shape of the earth: the earth is not a perfect sphere ball like, but a polar position slightly flat irregular sphere. 2. the size of the earth: the polar radius of the earth is 6357 km, 6378 km radius equatorial equatorial circumference is 40 thousand kilometers. 3. poles: North and South are two of earths most northern south. 4. latitude: along the east-west direction, around the globe a week circle. The east-west direction indicator. The length of the different latitude latitude range, the same latitude latitude of equal length. The equator is the longest on the earth. 5.: the equatorial latitude as a starting point, the 90 degrees to the south to the north. The equator divides the earth into the northern and southern hemisphere. 6.: the globe longitude and latitude connecting north and south poles with vertical line. The north-south direction indicator. All meridians are semicircular. The length is equal. Longitude: 7. starting point as the prime meridian, West 180 degrees, 20 degrees east and West hemisphere line W and 160 DEG E meridian circle. 8. graticule can determine a certain position. (2) the motion of the earth 1. of the earths rotation on its axis: the earth spins. The direction from west to east. The cycle is 24 hours a day. The formation of the alternation of day and night. 2.: the rotation and revolution of the earth around the sun. The direction from west to east. The period of one year. Seasonal variation of the formation. The angle between the axis and the earth orbit plane is 66.5 degrees, the Arctic point near the North star. 3. five Division: according to the heat of the sun on the earths surface distribution is divided into tropical, North and south temperate zones and North and south. 2. map (1) the scale, direction and legend on the map The distance / distance of 1. field scale = map (linear scale) 2. direction: In general, under the north sou