Rotation, the spinning motion of the Earth on its axis(1 rotation = 24 hours), Axis, The imaginary line that runs through the center of the Earth, Horizon, The visual line that separates the sky from land or water , Sunrise, The moment the Sun appears above the horizon in the morning; occurs in the East, Sunset, The movement the Sun goes below the horizon in the evening; occurs in the West, Revolution, When the earth goes around the sun (365 days=1 year).

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