NSDL Science Refreshers![]() 1 result returned Resources for Science > Astronomy > Our Solar System > Effects of gravity/inertiaUnderstanding the Skyhttp://www.windows.ucar.edu/tour/the_universe/uts/intro.htmlThis section of the Windows to the Universe web site provides information and images about understanding the sky including detailed information about the motion of planets, the motion of the Moon, Earth's motion, and seasons. Links at the top of each page allow users to navigate between beginner, intermediate and advanced levels. Resource Type: Audio/Visual - Illustration, Reference Material - Nonfiction Reference, Reference Material - Nonfiction Reference, Audio/Visual - IllustrationGrade Level: K, 1, 2, 3, 4, 5, 6 |

