MS - ESS1 - 1: Earth, Sun and Moon as a System - Develop and use a model of the Earth-sun-moon system to describe the cyclic patterns of lunar phases, eclipses of the sun and moon, and season.
MS - ESS1 - 2: Role of Gravity in the Galaxy - Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system.
MS - ESS1 - 3: Earth's Place in the Solar System - Analyze and interpret data to determine scale properties of objects in the solar system.