【高中综合】地理（High school comprehensive geography）.doc

【高中综合】地理（High school comprehensive geography） The cosmic part of the universe that is now visible -- the total galaxy Level of the celestial system: the total galaxy - the Milky Way galaxy (outer galaxy) - the solar system (other star systems) - the moon system The nearest star to the earth, the sun; The closest thing to earth, the moon. The outer structure of the sun: (from inside to outside) light sphere, color ball, corona 5. Solar activity: sunspot (light bulb); Flares, prominences (colored balls); Solar wind (corona) Signs of solar activity: sunspots and flares. Activity cycle: 11 years Effects of solar activity: interference with radio, geomagnetic storms, auroras The central celestial body of the solar system -- the sun (mass) Eight planets: mercury, Venus, earth, Mars (terrestrial planets); Jupiter, Saturn (the great planet), Uranus, Neptune (the distant planet) 10. Reason of life on earth: the distance from the earth is moderate; The earth is of moderate mass. 11. A lunar month cycle: new moon (the new moon, the tide, the solar eclipse) - waxing moon (the seventh, eight, neap tide) - full moon (15th and 16th, tide, eclipse) - last quarter (22, 23, neap tide) - the new moon. A full moon is 29.53 12. The earths rotation direction and cycle are from west to east, 23 hours 56 minutes and 4 seconds. 13. The earth rotation angular velocity In addition to the pole, 15 ° / hour per 1 ° time difference 4 minutes; The rotation speed of the earth is decreasing from the equator to the north and south poles. 14. The horizontal movement of earth objects is biased to the left of the southern hemisphere; The right side of the northern hemisphere; The equator is unbiased. 15. Earths rotation cycle 365 days at 5:48 minutes and 46 seconds. 16. The plane of the earths rotation plane -- equatorial plane; The plane of the earths plane - the ecliptic plane. 17. The obliquity of the ecliptic 23 ° 26 at present, the same as the tropic of cancer latitude. The earths axis Angle 90 °