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Science planet stars
chapter 2 vocabulary part one
Question | Answer |
---|---|
to spin around an axis | rotate |
an imaginary line that runs through the center of Earth from the North Pole to the South Pole | axis |
to travel in a closed path | revolve |
the closed path of one object in space around another object | orbit |
a natural body that revolves around a planet | moon |
one of the shapes the moon seems to have as it orbits earth | phase |
growing | waxing |
shrinking | waning |
less than half of the moon is illuminated or shining | crescent |
more than half of the moon is illuminated or shining | gibbous |