| meridian | one of the many lines on the globe grid running from the North Pole to the South Pole; used to measure degrees of longitude. |
| mesa | broad, flat-topped landform with steep sides; smaller than a plateau. |
| mountian | land with steep side that rises sharply (1,000 feet or more) from surrounding land; generally larger and more rugged than a hill. |
| mountian peak | pointed top of a mountain. |
| mountian range | a series of connected mountains. |
| mouth | (of a river) place where a stream or river flows into a large body of water. |
| ocean | one of the four major bodies of salt water that surround the continents. |
| ocean current | stream of either cold or warm water that moves in a definite direction through an ocean. |
| parallel | one of many lines on the globe grid that circles the earth north or south of the Equator; used to measure degrees of latitude. |
| paninsula | body of land jutting into a lake or ocean; surrounded on three side by water. |
| physical feature | characteristic of a palace occurring naturally, such as a landform, body of water, climate pattern, or resource. |
| plain | area of level land, usually at low elevation and often covered with grasses. |
| plateau | area of flat or rolling land at a high elevation, about 300-3000 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 and 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 laying next to a sea or an ocean. |
| sound | broad inland body of water, often between a coastline and one or more islands off the coast. |
| source | (of a river) place where a river or stream begins, often in highlands. |
| strait | narrow stretch of water joining two larger bodies of water. |
| tributary | small river or stream that flows into a large river or stream; a branch of the river. |
| upstream | direction opposite the floe of a river; toward the source of a river or stream. |
| valley | area of low land between hills or mountains. |
| volcano | mountain creates as liquid rock and ask erupt from inside the earth. |