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.
Oceans Divided In order to aid scientists in studying and understanding the vast seas of the Earth, researchers generally divide them into four distinct oceans. These oceans are the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic Ocean. As you can see in this image, these oceans are connected, forming one large ocean. Water from one of the four oceans is free to move into another ocean. Whales, fish, and other lifeforms from one ocean are free to travel to another. In addition to these four oceans, a number of seas, bays and gulfs have also been designated.