1. Created by Shannon Dodds

2. Rotation  The Earth rotates about its axis in a ________________direction.  The Earth makes one rotation every _______. This might seem slow but remember that the Earth’s circumference is 25,000 miles around. This means the Earth rotates at a speed of 1040 miles per hour!  The Earth’s rotation gives us our day and night. Counterclockwise 24 hrs

3.  http://video.google.com/videoplay?docid=- 5041127474937930014 http://video.google.com/videoplay?docid=- 5041127474937930014

4. Orbit  The Earth revolves around the sun in a _______________ direction.  It takes _______ Earth days to complete one orbit around the sun. Every four years we add an extra day to make up for the 0.25 days. We call this _________.  The Earth is moving around the sun in its orbit at a speed of 67000 miles per hour.  The Earth is held in orbit by the sun’s gravity and the Earth’s inertia. Counterclockwise 365.25 Leap year

6. Seasons  The Earth is tilted on its axis at an angle of ____ degrees.  When the northern hemisphere is tilted towards the sun there is more direct sunlight and the northern hemisphere becomes warmer. The longest day of direct sunlight is called the ______________. When the northern hemisphere is summer the southern hemisphere is winter. Summer Solstice 23.5

7. Seasons  When the northern hemisphere is tilted away from the sun there is less direct sunlight and the northern hemisphere becomes colder. The shortest day of indirect sunlight is called the _____________. When the northern hemisphere is winter the southern hemisphere is summer.  The days where the northern and southern hemispheres have equal amount of direct sunlight are called the spring or autumn ________. Winter Solstice equinox

8. http://www.cs.sbcc.cc.ca.us/~physics/flash/LengthofDay.swf