Day and night are caused by
Earth's rotation takes about
One complete revolution of Earth around the sun takes about
Earth has seasons because
When the north end of Earth's axis is tilted toward the sun, North America will experience
In the Northern Hemisphere, the summer solstice occurs when the sun is directly overhead at
An equinox occurs when
Earth rotates around an imaginary line that passes through the center of the Earth called
The path that Earth takes as it revolves around the Sun is called the
This occurs on March 21st and marks the beginning of spring each year.
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