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Day/Night cycle

rotate (rotation) to turn or spin on its axis
axis the imaginary line around which Earth rotates
revolve (revolution) to go around, or obit another object
orbit the path of one object in space around another object
day/night cycle created by the rotation of the Earth facing toward or facing away form the sun
one day the time it takes Earth to complete one rotation around its axis
one year the time it takes the Earth to complete one revolution around the sun
sunrise/sunset the time in the morning/evening when the sun appears/disappears on the horizon
atmosphere a layer of gases that surround an object in space
gravity a force which tried to pull two objects toward each other. Anything which has mass also has a gravitational pull.
satellite when an object in space orbits the Earth or another planet
Created by: LBrock