Term | Definition |
basin | a depression in the surface of their land some are filled with water |
bay | a part of sea or lake that extends into the land |
butte | a small section of raised land with steep sides |
canyon | a deep, narrow valley with steep sides; often has a stream flowing through it |
cataract | a large waterfall; any strong flood or rush of water |
delta | a triangular-shaped plain at the mouth of a river, formed when sediment is deposited by flowing water |
flood plain | a brood plain on either side of a river,formed when sediment settles on the river banks |
glacier | a huge, slow-moving mass of snow and ice |
hill | an area that rises above surrounding land and has a rounded top; lower and usually less steep than a mountain |
islands | an area of land that is completely surrounded by water |
isthmus | a narrow strip of land that connects two larger areas of land |
mesa | a high, flat-topped land form with cliff like sides; larger than a butte |
mountain | an area that rises steeply at least two-thousand feet(610 m) above sea level; usually wide at the bottom and rising to a narrow peak or ridge |
mountain pass | a gap between mountains |
peninsula | an area of land almost completely surrounded by water and connected by an isthmus |
plain | a large area of flat land or gently rolling hills |
plateau | a large, flat area, that rises above the surrounding land |
river mouth | the point where a river or lake enters a lake or sea |
strait | a narrow stretch of water that connects two larger bodies of water |
tributary | a river or stream that flows into a larger river |
volcano | an opening in the Earth's surface through which molten rock, ashes, and gases from Earth's interior escape |