One complete rotation of Earth takes about 24 hours. This rotation helps produce Earth's cycle of _____________ and _____________.
day, night
The ____________ of Earth's rotation axis is always in the same direction by the same amount.
tilt
The Law of Universal Gravitation states that the pull of _______________ between two objects depends on the mass of the objects and the distance between them.
gravity
The path that an object follows as it moves around another object is an ____________.
orbit
A spinning motion is called a ______________.
Rotation
The Earth rotates on an imaginary line through its center called the _______________ ___________.
rotation axis
Earth rotates in a ________________________________ direction.
Counterclockwise
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