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Answer:

Across
2One day or 24 hours. We have _____ and nighttime.
4The star at the center of our solar _____ that gives planets light and heat.
6One year or 365 and 1/4 days to travel around the Sun. The 4 _____ happen over this time for us.
8The side of the Earth that has rotated away from the Sun. This half of the Earth is in darkness.
9The _____ trip that Earth makes around the Sun. This takes one year or 365 and 1/4 days. Along with the tilt of Earth's axis, this trip makes the Earth have seasons.
Down
1The spinning of Earth on its axis. This _____ daytime and nighttime.
3The tilted imaginary line that Earth rotates on. It has a tilt of 23 1/2 degrees.
5The warmest season of the year. Summer happens because Earth is tilting toward the Sun and the _____ is more concentrated in that area, causing temperatures to rise.
7A year on Earth takes 365 and 1/4 days. this is the amount of time it takes Earth to revolve around the Sun.
 
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