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The Reasons for Seasons

The Reasons for Seasons. Edward M. Murphy Space Science for Teachers 2005. Day Night Cycle. Rotation vs. Revolution. Rotation is the spin of an object about its axis. The Earth rotates once a day (once every 24 hours). Revolution is the orbit of one object around another.

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950 views • 60 slides

Unit 3: Motion in the Universe

Unit 3: Motion in the Universe. Topic 1: Apparent Motions of Celestial Objects. Is the Earth Moving?. Evidence that Earth is moving. Evidence that Earth stands still. Apparent Motion. Apparent motion is the way an object APPEARS to move. Can be real, or a trick of perspective.

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919 views • 14 slides

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The Reasons for Seasons

Unit 3: Motion in the Universe