Vocabulary#6 Earth and the Sun

Rotation:A complete spin on an axis.
S:It takes 24 hours for the Earth to make one rotation.
 
International Date Line:The 180 line of longitude.
S:If you cross the date line going west,you add a day.

Standard Time Zone:A belt 15 wide in longitude in which all places have the same time.
S:There an hour of difference between the time zone.

Revolution:One complete trip around the Sun.
S:The Earth takes 365 days to make revolution.