Sixth Grade, Seventh Grade
Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere, hydrosphere, atmosphere, and geosphere (or lithosphere). Earth science can be considered to be a branch of planetary science, but with a much older history.
Minerals, Rock Cycle, Weathering and Erosion, Running Water and Ground Water, Glaciers, Deserts, and Wind, Earthquakes, Tectonic Plates, Volcanoes, Geologic Time, Motions of the Earth, Moon and Sun.