Vocabulary


 * Bay - Part of an ocean or lake partially enclosed by land.
 * Canyon - A narrow, deep valley with steep sides.
 * Cape - A point of land extending into an ocean or lake.
 * Cataract - A step-like series of waterfalls.
 * Cliff - The steep, almost vertical edge of a hill, mountain, or plain.
 * Butte A raised, flat area of land with steep cliffs, smaller than a mesa.
 * Delta - A triangular area of land formed from deposits at the mouth of a river.
 * Flood Plain - Flat land near the edges of rivers formed by mud and slit deposits by floods.
 * Glacier - A large ice mass that moves slowly down a mountain or over land.
 * Harbor - A sheltered area of water deep enough for docking ships.
 * Island - A body of land surrounded by water.
 * Marsh - Soft, wet, low-lying, grassy land that serves as transition between water and land.
 * Mesa - A wide, flat-topped mountain with steep sides, larger than a butte.
 * Mountain - Natural elevation of the earth's surface with steep sides and greater height than a hill.
 * Oasis - A spot of fertile land in a desert, fed by water from wells or underground springs.
 * Plateau - A broad, flat area of land higher than the surrounding land.
 * Prairie - A large, level area of grasslands with few or no trees.
 * River Mouth - The place where a river flows into a lake or an ocean.
 * Sea Level - Level of the ocean's surface, used as a reference point wen measuring the height or depth of the earth's surface.
 * Steppe - A wide, treeless grassy plain.
 * Strait - A narrow channel connecting two larger bodies of water.
 * Swamp - A lowland region that is saturated by water.
 * Valley - Low land between hills or mountains.
 * Volcano - An opening in the earth, usually raised, through which gases and lava escape from the earth's interior.