In this event, teams will be tested on different topics related to the Earth.  The event is usually either a station event or a sit-down test, and teams will be presented with data, charts/graphs, pictures or diagrams, and/or written descriptions.  You will then be asked to answer questions, perform calculations, and otherwise solve the tasks you are given.  Teams may also be asked to draw conclusions and predict likely future occurrences based on historical information.  Each team may bring one three-ring binder of any size. No material may be removed from the binder throughout the event. Each team may bring two stand-alone calculators of any type.  This year, the topic revolves around large-scale processes involving the cryosphere of the Earth, with an emphasis on glaciers.