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Earth and the sun  The sun is the center of our solar system  Earth spins, which makes the sun and stars appear to move across the sky.
Earth’s rotation  Planets rotate around an axis.  One whole spin of an object on its axis is called a rotation  1 day = 1 rotation  The sun, stars, moon only seem to rise in the east and set in the west because we rotate.
Earth’s revolution  Earth follows a path called an orbit  The orbit is not a circle, it is an ellipse  One full orbit around an object is a  revolution  Earth takes 365 days to orbit the sun  Gravity keeps the Earth in orbit around the sun
Seasons  Seasons are patterns of temperature changes over the year  The poles have the biggest changes, the equator the least  Four main changes in seasons o September equinox; equal amount of day and night.  Start of Fall o December solstice; least amoun
Created by: brian-willey