Vocabulary
physical features on Earth's surface, such as plains, mountains, and valleys
landforms
can be made again by nature or people
renewable resource
four main vegetation regions that cover most of the U.S.
forest, grassland, desert and tundra
amount of moisture in the air
humidity
longest river in the United States
Mississippi
group of connected mountains
mountain range
iron, copper, zinc, gold
non-renewable
Central Plains
area of flat or rolling land covered mostly by grasses and wildflowers
prairie
forms part of the border between the U.S. and Mexico
Rio Grande River
large city and its surrounding suburbs
metropolitan area
power made by wind or water
renewable
causes the change in seasons on our planet
earth's orbit
arid region
oceans that border the U.S.
Atlantic and Pacific
use of canals, ditches or pipes to bring water to dry areas
irrigation
fossil fuels
non-renewable
two kinds of tundra regions
arctic region and polar region
long period of little or no rain
drought
another name for a branch of a river
tributary
regular rise and fall of the ocean and bodies of water connected to it
tides
trees and plants
renewable
five factors that affect the climate of a region
1. distance from equator
2. distance from oceans and other large bodies of water
3. ocean currents
4. elevation
5. where on the continent
rain, snow, hail, sleet, etc.
precipitation
Name the five Great Lakes
Huron, Ontario, Michigan, Erie, Superior