Section 1
The four major landforms in Texas are
Hills, Mountains, Plains, and Plateaus.
groups of mountains, rise west of the Pecos River.
Ranges
blank in Northeast Texas, is the largest.
Caddo Lake
is an area's pattern of weather over a long period of time.
Climate
New Mexico
The Eastern Third of Texas
travels some 550 miles through the prairies of North
The Trinity River
largest underground water source in the state.
Ogallala Aquifer
the supply of water to land or crops to help growth, typically by means of channels.
Irrigation
South Texas is often called blank because it is covered by shrubs and small trees
Brush Country
a region of the Midwestern United States. In Texas, tornadoes usually appear in the Panhandle or the north-central part of the state.
Tornado Alley
are formations of natural gravel, rock, and sand that trap and hold rainwater underground.
Aquifers
serves as a major route for international trade.
Gulf of Mexico
Texas has more than a dozen major rivers and blank
Some 11,000 streams
Texas borders a large body of water called blank of mexico
The Gulf
largest snowfall on record in Texas occurred in blank when the Amarillo area was blanketed by more than 30 inches of snow.
1956
the longest river
The Rio Grande
The Ogallala Aquifer is the
largest underground water source in the state. It is also the largest in North America, stretching below
portions of eight states and covering about how many miles
174,000 square miles
the natural process by which soil and rock are removed from the Earth's surface and transported to a new location by forces like water, wind, ice (glaciers), and gravity
Erosion
Toward blank the season for hurricanes starts
Midsummer
to be blank means to die out completely or disappear. Several other species are endangered, or at risk of becoming blank
Extinct
These artificial lakes store water that is often used as drinking water for towns and cities
Reservoirs
where Texas is located
North of Mexico, west of Louisiana, south of Oklahoma, and east of New Mexico.
blank miles the Rio Grande forms the international boundary between the United States and Mexico.
1,254
nearly destroyed the Texas cattle industry for almost a decade.
The Great Blizzard of 1886- 87
When rainfall is much less than the average, Texans experience a
Drought
are areas of flat elevated land that drop sharply on one or more sides.
Plateaus
In contrast to dry western Texas, the eastern third of the state receives plenty of rain. The soil is also very fertile. As a result blank,blank and blank can easily grow there.
Forests
blank is any form of water—liquid or solid—that falls from the atmosphere and reaches the Earth's surface, primarily as rain, snow, sleet, or hail
Precipitation
Lady Bird Johnson, the wife of U.S. president Lyndon B. Johnson, worked to keep Texas highways beautiful by leading the effort to plant
Bluebonnets and other Wildflowers
This north-ern half of the planet lies between the blank and the equator.
North Pole
export
Shipping goods to other countries
The state's highest point or peak
Guadalupe Peak
of the shortest rivers in Texas-rises from a spring and flows for less than three miles.
The Comal
blank are violent funnel-shaped storms that develop inside severe thunderstorms.
Tornadoes
The highest temperatures occur most often in the
Rio Grande Valley
travels some 600miles across Texas.
Colorado River
West of the Hill Country lies the blank which rises in elevation from east to west.
Edwards Plateau
The area often experiences cold fronts, or air masses, which is called
Northers
The vegetation of Texas provides a blank or environmental home, to a wide variety of animals.
Habitat
A norther's effects are sometimes felt as far south as
Central Texas and along the coast of the Gulf of Mexico
any smaller stream or river that flows into a larger stream or river.
Tributaries
are areas of flat or gently rolling land without a sharp rise or fall in elevation.
Plains
is a natural outpouring of water from
underground.
A Spring
Lady Bird Johnson, the wife of U.S. president Lyndon B. Johnson, worked to keep Texas highways beautiful by leading the effort to plant bluebonnets and other wildflowers along the state's roads. She also helped establish the
National Wildflower Research Center in Austin
the wife of U.S. president Lyndon B. Johnson,
Lady Bird Johnson
Texans built dams along rivers to help control floods and to produce
Electricity
provides water for San Antonio, Austin, and the rest of Central Texas.
Edwards Aquifer
Several other species are endangered, or at risk of becoming extinct. Among them are
The Whooping crane and the Attwater Prairie Chicken
The largest body of water is the
Gulf of Mexico
The largest body of water is the Gulf of Mexico, which is an important resource for Texas. It provides a source for fishing and shrimping. More important, the Gulf of Mexico serves as a major route for international trade. Because of its blank on the Gulf,
Location