Phases, Eclipses – TheWorksheets.CoM – Page 2

Phases, Eclipses & Tides - Washoe County School District

Phases, Eclipses & Tides Notes Summary INTRODUCTION: As the moon moves, the positions of the moon, Earth, and the sun change in relation to each other. The changing relative positions of the moon, Earth, and the sun cause the phases of the moon, eclipses, and tides. MOTION OF THE MOON: The moon revolves around Earth about once every 27.3 days.