3rd Grade Landforms Vocabulary Mrs. Thornburg’s version Vocabulary in 3rd Grade Landforms Continent Canyon Mountain Waterfall Peninsula Harbor Cave Ocean Hill Valley Lake Bay Plateau River Island Volcano Plains Gulf What do we call a mountainous vent in the Earth’s crust that can spew out lava? Volcano What do we call a large hole in the side of a hill or mountain or in the ground? Cave What do we call a very tall, raised area of earth, sometimes with a spiky top (peak)? Mountain What do you call one of the huge bodies of salt water that make up about two-thirds of the surface of the Earth? Ocean What do we call a body of water that flows downhill, usually emptying into a larger body of water? River What do we call a piece of land that is surrounded by water on three sides? Peninsula What do we call a piece of land that is flat and higher than the land around it? Plateau What do we call flowing water where a river falls off steeply? Waterfall What do we call a deep valley with very steep sides, often carved through the Earth by a river? Canyon What do we call a piece of land surrounded by water on all sides? Island What do we call one of the seven land masses that the Earth is divided into? Continent What do we call a large mound or raised area of earth? Hill What do we call a medium-sized body of water surrounded by land? Lake What do we call a very flat piece of land? Plains What do we call a low place between mountains? Valley What do we call a large portion of an ocean or sea partly surrounded by land? Gulf What do we call a portion of an ocean or sea partly surrounded by land (smaller than a gulf)? Bay What do we call a portion of an ocean or sea partly surrounded by land (smaller than a bay with docks or ports for boats)? Harbor