2DAY and NIGHT End of the axis are the NORTH and SOUTH poles. Axis of Rotation – an imaginary line running through Earth’s center that allows Earth to rotate.End of the axis are the NORTH and SOUTH poles.NORTHSOUTHP O L EP O L E
3DAY and NIGHTAny location on Earth’s surface moves from WEST to EAST as Earth turns.North PoleThe wayEarth Rotates
4DAY and NIGHT½ Earth is in Sunlight½ Earth is in DarknessIf it is noon at one location , what time is it at a location directly on the other side of the Earth?
5DAY and NIGHT1 FULL rotation on Earth’s Axis = 1 day (24 Hours)
6Seasons Revolution – the motion of one object around another. The Earth is tilted at about a 23.5 degree angle.If Earth’s rotation and orbit lined up perfectly what would that mean for Earth’s Seasons?
7Seasons Earth’s orbit is NOT quite a perfect circle. Earth is about 5 million kilometers closer to the SunEarth is about 5 million kilometers further away then the Sun148,000,000 km153,000,000 km
8SeasonsSeasons – patterns of temperature changes and other weather trends over the course of a year.Near the poles, very large changes in temperature from winter to summer.Near the equator, very little temperature changes all year.
9SeasonsEquinox – sunlight shines equally on the northern and southern hemispheres.Solstice – the area of sunlight is at a maximum in one hemisphere and a minimum in the other hemisphere.Both occur on or around the 21st day of certain months of the year.
11In the North Pole the sun does not set at all for 6 months at a time. Lengths of DaysIn the North Pole the sun does not set at all for 6 months at a time.The further from the equator the more extreme the changes in day length become.Near the equator, the periods of daylight and darness are almost equal year-roudn. ~ 12 hoursIn the South Pole the sun does not rise for 6 months at a time.
12Unit E : Space Science : Chapter 2 : Page 49 : Questions : 1- 6 HOMEWORKUnit E : Space Science : Chapter 2 : Page 49 : Questions : 1- 6