Transcript Earth-Sun Relationship

Earth-Sun Relationships
Earth
The Sun
Star that is 93 million miles away from earth
Rotation causes day and night.
• Spinning of the Earth
on its imaginary axis.
• 24 hours
The revolution of the Earth
around the sun
• 365 ¼ days
• Seasons due to its tilt
during revolution (23.5
degrees).
A - Summer in the Northern Hemisphere
B - Summer in the Southern Hemisphere
Solstices
• Twice a year, when the tilt of the Earth's is directly towards or
away from the Sun
• Winter Solstice - December 21 - beginning of winter.
• Summer Solstice -June 21 - beginning of summer
Equinoxes
Sunlight strikes the earth most
directly at the equator.
Spring Equinox - March 21
Fall Equinox - September 23
The Four Seasons: The Effect of the Tilt
of Earth’s Rotation Axis
Affected by relative position of
the sun and the Earth
1. Climate
2. Seasons
3. Day and Night