Vocabulary N°6

1.Rotation: A complete spin on an axis.
                                 

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  The rotation of the Earth takes 24 hours.

2. International Date Line: The 180° line of longitude.



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  The International Date Line was create when the day begins.

3. Standard Time Zone: A belt 15° wide in longitude in which all places have the same time.



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  The Standard Time Zone exits to know the hour of other countries.

4. Revolution: One complete trip around the Sun.



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  The revolution of Earth takes 365 and 1 quarter.