Landform Vocabulary

2. level base level for measuring elevations. Sea level is determined by measurements taken over a 19-year cycle.
5. specific natural feature on the Earth's surface.
7. single hill or rock formation that rises sharply from a flat landscape, usually in a desert.
10. landmass that forms as tectonic plates interact with each other.
11. Trench deepest place on Earth, located in the South Pacific Ocean at 11,000 meters (36,198 feet) at its deepest.
14. act in which earth is worn away, often by water, wind, or ice.
16. series or chains of mountains that are close together.

1. depression in the Earth between hills.
3. movement of air (from a high pressure zone to a low pressure zone) caused by the uneven heating of the Earth by the sun.
4. massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle).
6. large region that is higher than the surrounding area and relatively flat.
7. a dip or depression in the surface of the land or ocean floor.
8. flat, smooth area at a low elevation
9. deep, narrow valley with steep sides
12. topographic features of an area.
13. highest spot on Earth, 8,850 meters (29,035 feet). Part of the Himalaya range, In Nepal and China.
15. land that rises above its surroundings and has a rounded summit, usually less than 300 meters (1,000 feet).