- mesa: broad, flat-topped landform with steeps sides; smaller than a plateau
- mountian: land with step sides that rises sharply(1,000 feet or more) from surrounding land;generally larger and more rugged than a hill
- mountian peak: pointed to of a mountian
- mountian range: a series of connected mountians
- mouth: place where a stream or river flows into a larger body of water
- ocean: one of the four major bodies of salt water that surround the continents
- ocean current: stream of ethier cold or warm water that moves in definite direction through ocean
- parallel: one of many lines on the global grid that circles the earth north or south of the Equator; used to measure degrees of latitude
- penninsula: body of land jutting into a lake or ocean, surrounded on three sides by water
- physical feature: characteristic of a place occuring naturally, such as a landform, body of water, climate pattern, or resource
- plain: area of land, usually at low elevation and often covered with grasses
- plateau: area of flat or rolling land at a high elevation, about 300-3,000 feet high
- Prime Meridian: line of the global grid running from the North Pole to the South Pole through Greenwich, England; starting point for measuring degrees of east of west longitude
- relief: changes in elevation over a given area of land
- river: large natural stream of water that runs through the land
- sea: large body of water completely or partly surrounded by land
- seacoast: land lying next to a sea or an ocean
- sound: broad inland body of water, often betweenacostline and one or more islands off the coast
- source: (of a river) place where a river or stream begins, often in high lands
- strait: narrow stretch of water joining two larger bodies of water
- tributary: small river or stream that flows into large river or stream; a branch of the river
- upstream: dicterction opposite the flow of a river; toward the source of a river or stream
- valley: area of low lands between hills mountains
- volcano: mountain created as liquid rock and ash erupt from inside the earth