Earth science is the investigation of interactions among the four parts of the earth system—the atmosphere (air, weather), hydrosphere (water, ice), biosphere (plants, animals), and geosphere (land, rocks), which, taken together, provide support system for life on earth.  This course investigates the compositional layers of the Earth, the origins of minerals, tectonic movements and energy transformations that occur.  It also investigates the interaction of life with the atmosphere, hydrosphere, lithosphere and climate.  It will also examine the effects of catastrophic events such as volcanic eruptions and earthquakes on the environment, the geologic hazards, and our role in modifying the environment through earth resource management. It is expected that these will lead students to an understanding of the long term sustainability of our planet and all forms of life that depend upon these earth systems.  Such understanding helps you to appreciate the need for incorporating sustainability in your subsequent planning courses.