Due to the Flow of Energy. Students learn to explain that these events are due to the flow of energy.
Students explain why days are longer in the summer and shorter in the winter.
Students explain why the sun s daily path changes during the year. Students explain the order of the moon phases from one full moon to the next. The revolution of the Earth and objects in the solar system around the Sun accounts for seasonal variations and patterns. Energy is distributed over the solar system. Give examples of what occurs on Earth.