Major Understandings

MST4.E.PS1.1a: Natural cycles and patterns include:

• Earth spinning around once every 24 hours (rotation), resulting in day and night
• Earth moving in a path around the Sun (revolution), resulting in one Earth year
• the length of daylight and darkness varying with the seasons
• weather changing from day to day and through the seasons
• the appearance of the Moon changing as it moves in a path around Earth to complete a single cycle