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In which direction does the Earth turn around its axis of rotation? correct answers Earth turns from West to East. In which direction do we perceive the sky turning around us? correct answers Turns around us from East to West. What is the Celestial Sphere? correct answers Imaginary globe where Earth is at the center and provides an easy way of describing position of objects in sky. What are the two points that the celestial sphere seems to turn around? correct answers North Celestial Pole (NCP) and the South Celestial Pole (SCP). How do we define the horizon for a person at any point on the Earth? correct answers By there Zenith which is the point directly over head. What would be the horizon for someone standing at the north pole? correct answers The Horizon is the point under your feet no matter where you stand. How do stars appear to move around the sky at the north pole? correct answers The stars make circles around the sky staying the same height above the horizon. How do stars appear to rise and set for someone standing at the equator? correct answers The starts look to go straight over head starting in the East and setting in the West. For someone living at a mid-northern latitude (like Mt. Pleasant, latitude = 43.5E), where would you find the North Celestial Pole? correct answers By knowing the your latitude and direction. How do stars near the North Celestial Pole turn around the pole; clockwise or counter-clockwise? correct answers From East to West; Clockwise. Why do we have seasons on the Earth? correct answers Because of the 23.5 degree tilt of Earths rotation axis. What is the tilt of the Earth's rotation axis (in degrees) relative to a line perpendicular to the Ecliptic? correct answers 23.5 degrees. When it is summer in the northern hemisphere, what season is it in the southern hemisphere? correct answers Winter. When is summer solstice? correct answers June 21st When is winter solstice? correct answers Dec. 21st When is autumnal equinox? correct answers Sept. 21st