Students will learn about the four Earth systems and how they are connected. Students will be able to: 1. Explain the Earth as a system of interconnected parts 2. Properly define and use Earth science vocabulary Background The Earth consists of four systems: the atmosphere, hydrosphere, geosphere, and biosphere, which are interconnected. Changes to one part of the system can have consequences on the others. Changes to global or regional climate can be caused by changes in the sun's energy output or Earth's orbit, tectonic events, ocean circulation, volcanic activity, glaciers, vegetation, and Duration: 60 Minutes.