continental divide
On the crest of the Rocky Mountains, it divides the major river systems into those flowing east and those flowing west
interior lowlands
Area between the Appalachian & Rocky Mtns.
pacific coastal ranges
Made up of 2 major mtn. systems which run along the west coast of the US and Canada; a highly volcanic area
-Mount Rainier -Mount Hood -Mount St. Helens
coastal plains
A flat, low-lying land adjacent to a sea coastal plain which runs along the East Coast of the US at a distance of about 500 miles (800 km).
Aleutian Islands
A volcanic archipelago off the coast of Alaska that extends in the Pacific Ocean
basins
A lower area of land generally surrounded by mountains
range
An extensive area of open land on which livestock wander and graze.
Great Plains
The broad expanse of prairie and steppe which lie east of the Rocky Mountains in the United States and Canada
Canadian Shield
An arc of ancient rock covering nearly half of Canada which is centered around the Hudson Bay; scraped by glaciers
Appalachian mountains
A mountain range in North America which stretches from Alabama to southeastern Canada
-Blue Ridge -Catskill -Green Mountain
Grand Canyon
One of the 1st national parks created by Theodore Roosevelt, it is a colorful steep-sided gorge carved by the Colorado River in Arizona
Silicon Valley
The southern part of the San Francisco Bay Area in Northern California which specializes in technology
Mackenzie river
The largest and longest river system in Canada which flows in a northerly direction to the Arctic Ocean
Niagara Falls
The collective name for three waterfalls that straddle the international border between Canada and the United States
Great Lakes
A series of interconnected freshwater lakes located primarily on the Canada-United States border (Huron, Ontario, Michigan, Erie, and Superior) connected to the Atlantic Ocean through the St. Lawrence River
baby boomer
A person born in the years following WWII, when there was a temporary marked increase in the birth rate.