Questions Due Friday
What is the difference between rotation and revolution?
What are the 3 types of latitudes? What are their coordinates?
When are the dates for the summer/winter solstices?
When are the Equinoxes?
When it is summer in the Northern Hemisphere, what season is it in the Southern Hemisphere?
Why?
Night and Day
 Axis- Line running through the Earth from the N. to S. poles
 Rotation- one complete turn on the Earth’s axis
o 24 hours (One Day)
Orbit- The oval shaped path the earth takes around the sun
Revolution- One complete orbit
365 1/4 days
Latitudes
Climate and Temperature are linked to Latitudes
Low Latitudes (23.5 N to 23.5 S) = Tropics
• 23.5 N = Tropic of Cancer
• 23.5 S = Tropic of Capricorn
High Latitudes (66.5 N and 66.5 S)= Polar
• 66.5 N = Artic Circle
• 66.5 S = Antarctic Circle
Middle Latitudes (Temperate Zone)
 23.5 N to 66.5 N and 23.5 S to 66.5 S
Four Seasons
Important Days
 Sun Shines on the Tropic of Cancer on June 21 or 22
Summer solstice (First day of summer)
 Sun Shines on the Tropic of Capricorn on December 21 or 22
Winter solstice (First day of winter)
 Sun Shines on Equator on March 21 and September 23
Days exactly the same length as nights = Equinoxes
Seasons
Earth is tilted on its axis
Toward sun = Days are longer, weather is warmer
Away from sun = Days are shorter, weather is colder
Tilt causes seasonal opposites on the Earth in the N. and S. Hemi.