The Sun-Earth-Moon System – How the Earth Moves

The Earth rotates at 1,670 kilometers per
hour. The amount of time it takes for the Earth to rotate once is known as its period
of rotation, or what we call a day. Earth’s period of rotation is 24 hours. To access a comprehensive array of complete
multimedia lessons, as well as the most up-to-date, standards-based curriculum content that’s
researched, proven and teacher-approved, visit to create your FREE online
learning account now! Each multimedia lesson includes animated presentations interactive
activities, virtual labs, vocabulary exercises and standards-based assessments.

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