Mountain. Large formation that is higher than the surrounding land.
Mountain Range. Continous chain of mountains
Basin or Depression. An area lower than the surrounding land. Sometimes formed by the erosion of a river, some ohters because of two shifting plates.
Plateau - is an area of highland, usually consisting of relatively flat terrain.
Gulf. A sea area surrounded by land on three sides. A smaller one is called bay.
Bay
Inlet. A narrow water passage between peninsulas or through a barrier island leading to a bay or lagoon. Can be caused because of the water of a fjord.
Plain. A large open area of flat or slihgtly undulating land
Cape. Part of the land that projects out into the sea
Valley. Long basin in the land. A river valley is V-Shaped. Glacial valleys are U-Shaped.
Peninsula. A large piece of land surrounded by water on three sides. It is connected to the land by a thin strecht of land called isthmus
Island. A piece of land completely surrounded by water. A group of island close together form an archipielago
Continental Shelf. The undersea of a continent that descends gradually to depths of around 400 mts.
Continental Slope. A steep underwater area that links the continental shelf with the ocean floor.
Abyssal plain . A flat area of ocean floor found at depths beween 3000 to 7000 mts.
Oceanic trench. A long basin on the ocean floor
Oceanic Ridge. A large underwater mountain range