What Causes Day and Night

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• What Causes Day and Night?

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Axis

• The Earth has an imaginary line running from its
  north and south pole called its axis.
• The earth has a tilted axis.
• If the axis were not tilted, we would have 12
  hours of day and 12 hours of night.

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Revolution

• The movement of a planet in its orbit around the
  sun is called a revolution.
• One year365 ¼

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Rotation

• When the Earth spins on its axis it is called a
  rotation.
• One day24 hours
• The Earths rotation causes day and night.
• The earth rotates from west to east. Therefore,
  the sun sets in the west and rises in the east.

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The End