This laboratory-based earth science course can be used for either eighth or ninth grade. Most homeschooled students should be ready for it in eighth grade, but privately- and publicly-schooled students will be more comfortable with it in ninth grade. It covers the general properties of the earth’s geosphere, hydrosphere, and atmosphere. Students learn about all the sections of the geosphere (such as core, mantle, crust, etc.) and then they study each in more detail. When studying the earth’s crust, they learn about minerals, rocks, and the rock cycle. Plate tectonics is then covered, which leads to a discussion of seismic waves, earthquakes, and volcanoes. Students then learn about fossils and how both uniformitarians and catastrophists interpret those fossils as well as the sedimentary rocks in which they are found. A discussion that compares uniformitarianism and catastrophism follows, in which the strengths and weaknesses of each view are covered.