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.
The pelagic zone is the area of the ocean outside of coastal areas. This is also called the open ocean. The open ocean lies over and beyond the continental shelf. It's where youâll find some of the biggest marine life species. The sea floor (demersal zone) is not included in the pelagic zone. The word pelagic comes from the Greek word pelagos meaning sea or high sea. Different Zones Within the Pelagic Zone