Horizon Revolving

Horizon Revolving
The apparent motions of the Sun, Moon, planets, and stars across the sky can be explained by Earth’s rotation

The apparent motions of the Sun, Moon, planets, and stars across the sky can be explained by Earth’s rotation and revolution. Earth’s rotation causes the length of one day to be approximately 24 hours. This rotation also causes the Sun and Moon to appear to rise along the eastern horizon and to set along the western horizon. Earth’s revolution around the Sun defines the length of the year as 365 1/4 days.
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QandANJ Janie: Earth’s changing position with regard to the Sun and Moon has noticeable effects. (PS1.1f ) Earth revolves around the Sun with its rotational axis tilted at 23.5 degrees to a line perpendicular to the plane of its orbit, with the North Pole aligned with Polaris. During Earth’s one-year period of revolution, the tilt of its axis results in changes in the angle of incidence of the Sun’s rays at a given latitude. These changes cause variations in the heating of the surface. This produces seasonal variation in weather.

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