ESS1. Earth’s Place in the Universe
8.MS-ESS1-1b. Develop and use a model of the Earth-Sun system to explain the cyclical pattern of seasons, which includes Earth’s tilt and differential intensity of sunlight on different areas of Earth across the year.
8.MS-ESS1-2. Explain the role of gravity in ocean tides, the orbital motions of planets, their moons, and asteroids in the solar system.
Did you see the "Celestial Event of the Century"-the US solar eclipse on August 21, 2017?
Do you know how an eclipse happens?
Gravity and Orbits PhET Simulation
Useful Links
Sun or Moon Rise/Set Table for One Year