Benchmark 10B
Historical Perspectives: Uniting the Heavens and Earth
Grades 9-12, page 243

The Newtonian model made it possible to account for such diverse phenomena as tides, the orbits of planets and moons, the motion of falling objects, and the earth's equatorial bulge.

NSES Content Standard D 
Earth and Space Science: Earth in the Solar System
Grades 5-8, page 161
Gravity is the force that keeps planets in orbit around the sun and governs the rest of the motion in the solar system. Gravity alone holds us to the earth's surface and explains the phenomena of the tides.

See also Content Standard G History and Nature of Science (grades 9-12): Historical Perspectives