Page 2 How long is one rotation of Earth? How long is one revolution of Earth? Page 3 How long is one rotation of Earth? How long is one revolution of Earth? Rising and Setting of the Sun Rising and Setting of the Moon The Seasons Changing Constellations Movement of Stars through the sky Page 4 How long is one rotation of Earth? How long is one revolution of Earth? Rising and Setting of the Sun Rising and Setting of the Moon The Seasons Changing Constellations Movement of Stars through the sky One rotation = 360° Time for one rotation = 24 hours 360° ÷ 24 = 15°/hr Page 5 How long is one rotation of Earth? How long is one revolution of Earth? Rising and Setting of the Sun Rising and Setting of the Moon The Seasons Changing Constellations Movement of Stars through the sky One rotation = 360° Time for one rotation = 24 hours 360° ÷ 24 = 15°/hr How many degrees did the stars move from diagram 1 to diagram 2? 30° (2 hours x 15°)Read More