DEFINITION: A VALLEY IS A LOW AREA BETWEEN HILLS; OFTEN WITH A RIVER

PLAIN

• Definition: Large flat area with few trees
• West siberian plain is a plain in Russia

REEF

• Definition: a ridge of jegged rock, sand or coral just above or below the furface of the sea
• Stretching more than 1,200 miles along the coastline of egypt eritria this reef id home to more
• than 260 different species

Plateau
Def:area of highland, usually consisting of relatively flat terrain.
Ex:The Colorado Plateau is a land of scenic beauty characterized by sparsely vegetated plateaus, mesas, deep canyons, and barren badlands.

Island
Def: a piece of land surrounded by water
Ex: Amelia island: Whether it's the seemingly endless "green space," or the "unbelievably hospitable" locals, readers agree that this Florida island is a "beautiful, history-filled family location."

River
Def: a large natural stream of water flowing in a channel to the sea, a lake, or another such
Ex: bay river in the Philippines

Lake
Def: : a considerable inland body of standing water; also : a pool of other liquid
Ex: lake Shawnee in Kansas

Mountain:
Def:A mountain is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak. A mountain is generally steeper than a hill. Mountains are formed through tectonic forces or volcanism.
Ex: Mount McKinley, [native name Denali ] is the highest mountain peak in North America, with a summit elevation of 20,237 feet above sea level.

Strait: a narrow passage of water connecting two seas or two large areas of water
Ex: damper strait in Indonesia

Peninsula:a piece of land almost surrounded by water or projecting out into a body of water.
Ex:great peninsula in Florida

Ithmus:a narrow strip of land with sea on either side, forming a link between two larger areas of land.
Ex: The Isthmus of Panama connects North America with South America and is bordered by the Pacific Ocean and the Atlantic Ocean.

Archipelago: A group of islands

Ex:Hawai'i
Florida Keys

Canyon: A canyon or gorge is a deep ravine between pairs of escarpments or cliffs and is most often carved from the landscape by the erosive activity of a river over geologic timescales.

Ex: Bryce Canyon National Park . . . is a United States National Park that is located in Utah's canyon

GULF:
a deep inlet of the sea almost surrounded by land, with a narrow mouth.

Example:the Gulf of Mexico is in Mexico