Explain how the visible shape of the moon follows a predictable cycle which takes approximately one month.
Develop an understanding that the sun is the central and largest body in the solar system and that Earth and other objects in the sky move in a regular and predictable motion around the sun. Understand that those motions explain the day, year, moon phases, eclipses and the appearance of motion of objects across the sky. Understand that gravity is the force that keeps the planets in orbit around the sun and governs motion in the solar system. Develop an understanding that fossils and layers of Earth provide evidence of the history of Earth’s life forms, changes over long periods of time, and theories regarding Earth’s history and continental drift.
Common objects in the sky have predictable patterns of movement.