Casement window, with latticed lights. A casement is a window that is attached to its frame by one or more hinges. Casement windows are hinged at the side. Windows hinged at the top are referred to as awning windows, and ones hinged at the bottom are called hoppers.
Open Systems. The ocean is an open system. The ocean is an example of an open system. The ocean is a component of the hydrosphere and the ocean surface represents the interface between the hydrosphere and the atmosphere that lies above. Solar radiation passes through the atmosphere and is absorbed by the ocean.
What's the open ocean? The open ocean is known as the oceanic zone and begins at the edge of the continental shelf and extends outward. Itâs the largest marine zone, covering more than 90 percent of the surface area of the worldâs oceans. The open ocean ranges from about 500 meters deep along continental slopes to more than 11,000 meters at the deepest ocean trench.