12 terms

Unit 4 - The Solar System

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solar system
A group of planets and other objects that orbit around a star
star
An object that creates its own light and is the center of a solar system
planet
A sphere-shaped object that orbits around a star
moon
A natural object that orbits a planet.
rotation
Earth spins on its axis, causing us to experience day and night
day
The time it takes an object to rotate on its axis
revolution
The motion of an object around another object
year
The amount of time it takes an object to revolve around another object
new moon
When the moon is all dark and you cannot see it
full moon
When the moon is fully lit up
first quarter moon
When the right half of the moon is lit up
third quarter moon
When the left half of the moon is lit up
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