Earth's physical geo part 1


Published on

Published in: Technology, Education
  • Be the first to comment

  • Be the first to like this

Earth's physical geo part 1

  1. 1. Earth's Physical Geography UNIT 2
  2. 2. OUR PLANET, THE EARTH How does the Earth move in space? Why do seasons change?
  3. 3. THE EARTH AND THE SUN Days and Nights  The Earth rotates on its axis.  Axis=imaginary line through the center of the earth  One rotation=24 hours or 1 day.
  4. 4.  It is daytime on the side facing the sun and night on the side away from the sun.  As the earth spins on its axis it is revolving around the Sun in an oval pattern.  One year (365 ¼ days)= One complete revolution around the sun..
  5. 5. THE EARTH AND THE SUN Understanding Seasons Why are the days longer in some parts of the year?  The Earth’s axis is at an angle.  In about half of the Earth’s orbit, the tilt causes a region to face toward the sun for more hours than it faces away from the sun.  Days are longer.  In other regions that face away from the sun for more hours, days are shorter.
  6. 6. Why does the temperature change during the seasons?  The warmth you feel at any given time of year depends on how directly the sunlight falls on you.  Some regions receive a great deal of direct sunlight, while others receive very little.  This is also a result of the Earth’s tilt and orbit.
  7. 7. Looking at Latitudes Line of Latitude Equator Gets Direct Where is it? Sunshine on 0º March 21 September 23 Tropic of Cancer 23 1/2º N 23 1/2º S December 21 Arctic Circle 66 1/2º N Never Antarctic Circle 66 1/2º S Never Spring and fall equinoxes: Days and nights are almost equal everywhere June 21 Tropic of Capricorn Seasons First day of winter, or winter solstice, in Northern Hemisphere
  8. 8. Zones of Latitudes
  9. 9. Looking at Latitudes: Zones Low Latitudes: The Tropics • Area between the Tropic of Cancer and the Tropic of Capricorn • In this region, it is almost always hot.
  10. 10. Middle Latitudes: The Temperate Zones Area between the Tropic of Cancer and the Arctic Circle  AND the area between the Tropic of Capricorn and the Antarctic Circle  In this region, there are seasons, each with a distinct pattern of daylight, temperature, and weather. 
  11. 11. High Latitudes: The Polar Zones Area between the Arctic Circle and the North Pole  AND the area between the Antarctic Circle and the South Pole  In this region it is very cool to bitterly cold. 