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Cartography
the art and science of mapmaking
Base maps
created by aerial and field surveys
Topographic maps
show elevation using contour lines; show natural and man-made surface features of the Earth
Thematic maps
show data based on one theme (population, climate, economic trends, wildlife distribution)
Political maps
borders and boundaries of countries; it can depict the whole world, a single region, country, or even city
Physical maps
contains labels for countries and capital cities as well as major physical features like plains, rivers, plateaus, and mountains
Climate map
depicts changes in temperature based on region; use number, colors, or lines to depict changes
Economic or resource map
depicts the distribution of resources; can focus on one specific or show the distribution of several
Globes
three dimensional renditions of the entire Earth
Compass rose
indicates the four directions: north, south, east, west
Legends
explains symbols found on the map or globe
GPS (global positioning system)
a navigation system composed of 24 satellites; originally used by the military but has been made available to civilians in cars and phones
Mercator
accurately shows the shape and direction but distorts distance and size of land masses
Equal-area
accurately shows size of land masses but usually distorts their shape
Robinson
useful overall picture of the world; keeps correct size and shape of most continents and oceans, but distorts size of both north and south polar caps
Azimuthal
true compass direction, usually circular, distorts scale, area, and shape; usually used to show areas of north and south poles most accurately
Absolute location
exact coordinates using latitude and longitude degrees
Relative location
location compared to surroundings (ex. on the banks of the Mississippi River)
Latitude
north and south of equator
Longitude
east and west of Prime Meridian
Time zones
every 15 degrees of longitude = 1 hour
Equator
an imaginary circle around the Earth, equidistant from the north and south poles; runs east to west through South America, Africa, and Indonesia; divides the northern hemisphere from the southern hemisphere
Prime Meridian
an imaginary line that divides Earth into two equal parts: the Eastern Hemisphere and the Western Hemisphere. It is used as the basis of the world’s time zones.
Tropic of Cancer
the imaginary line of latitude -23 degrees north of the equator; it marks the farthest north where the sun can be seen directly overhead
International dateline
an imaginary line on the surface of the Earth; it runs from the North to the South pole separating 2 consecutive calendar days; it passes through the middle of the Pacific Ocean at 180 degrees longitude
Regions
small unites of the earth’s surface composed of multiple places that have more similarities than differences
physical, functional, and cultural
3 types of regions
Physical Regions
share similar physical features Ex. the Rocky Mountains, the Great Lakes…
Functional Regions
central location for a service Ex. D.C. functional government region
Cultural Regions
shared human characteristics such as language, religion, tradition, and economy Ex. Latin America, the South, the Bible Belt…
Transition zones
areas which exhibit characteristics similar to multiple regions around it Ex. the U.S. Mexico border has both Latin American and North American characteristics
Internal and external forces
the physical processes that shape the patterns of the earth’s surface
Internal forces
shape the earth’s surface through the constant movement of plates under the surface
Plate tectonics
the movement of plates under the surface of the earth; This movement causes earthquakes and volcanoes to erupt
External forces
cause major changes on or above the surface of the earth; Ex. erosion from the wind, hurricanes, pollution…
Biomes
vegetation zones
Forest
a large, thick growth of trees and underbrush
Grassland
a large area of land covered with grasses
Desert
a large, dry, barren region
Tundra
a level and rolling treeless plain in arctic and sub-attic regions with black mucky soil with permanently frozen subsoil, called permafrost
Climate
the term used to describe the average weather or daily weather conditions for a specific region over a long period of time
Temperature and precipitation
two defining characteristics of climate
Weather
the conditions of the air that affects the day-to-day atmospheric conditions. It includes factors such as temperature, air pressure, wind, and moisture or precipitation
Climate zones
tropical, dry, temperate, continental, and polar
Elevation
distance above sea level
Mountains
act as barriers to wind and moisture
Orographic lift
as the wind is forced up and over high mountains, it loses the ability to hold moisture. This precipitation falls on the windward side, leaving a dry air mass in the descending winds, therefore, desert conditions exist on the lee side of the mountain; also known as the rain shadow effect; Ex. the Great Basin of Nevada and the Great Plains of Texas
Tropical rainforest
intense sun and rain every day, with high humidity; the temperature is always high, but rarely exceeds 90 degrees
Savannah
receives rain seasonally with little to none in the winter, and up to 30 inches in the summer; temperatures do not exceed 90 degrees in the summer or 80 degrees in the winter
Desert
receives less than 10 inches of rain a year; temperatures are extreme with intense heat during the day, and intense cold at night; deserts often have some small pockets of vegetation usually surrounding a small body of water isolated from any other similar area
Mediterranean
found in the middle latitudes in land along the western coast of a continent; summers are hot and dry, while winters are mild and wet
Humid subtropical
found in the middle latitudes in land along the southeastern coast of continents; summers are long and wet, and winters are short and dry. This climate supports the biggest percentage of people
Marine
also found in the middle latitudes in areas near or surrounded by water; the weather is temperate year-round; winter temperatures stay above freezing generally and summer temperatures rarely rise above 70 degrees
Humid continental
middle latitude climate, generally found inland, this climate is the truest four-season climate; precipitation happens year-round, with winters ranging from cold to extremely cold, and summers from hot to extremely hot based on distances from the ocean
Steppes
stretches of land in the middle latitudes that are far from the ocean; steppes typically have rainfall of 10–20 inches a year, and tend to have extreme seasons
Taiga
found in the high latitudes, it is distant from the ocean and thus has extreme cold temperatures; it has a short growing season and is home to the world’s largest forestlands
Tundra
the area immediately surrounding the poles; it has very long, cold winters and short summers; it has relatively low participation and supports no human life
Oasis
small pockets of vegetation usually surrounding a small body of water isolated from any other similar area
Plate tectonics
theory which explains the distribution of continents, earthquakes, volcanoes, and mountains; plates move in response to intense pressure from deep within the Earth. Because the continents are thought to “piggyback” ride on the plates, their gradual movement is referred to as “continental drift”
Orogeny
mountain formation
location, place, region, human-environment interaction, and movement
5 themes of geography
ways in which we can describe the physical area of the Earth
Location, place, and region all focus on…
developing an address for the area
Location focuses on…
determining characteristics, physical and human, that make an area unique
Place and region…
look at ways in which people and place interact with and influence each other
Human-environment interaction and movement…
Location
absolute or relative
Absolute location
exact coordinates using latitude and longitude degrees
Relative location
location compared to surroundings (ex. on the banks of the Mississippi River); Done primarily through a grid system
Grid system
divides the world with imaginary lines, spaced equally apart, running horizontally and vertically (latitude and longitude lines); Each line is a degree and the area between the lines is subdivided into minutes and seconds
Place
has human (created by human such as canals and roads) and physical characteristics (mountains, rivers, deserts)
Human-environment interaction
humans adapt to the environment (wearing warm clothes when its cold), humans modify the environment (planting trees to block prevailing winds), and humans depend on the environment (for food, water, raw materials)
Movement
how humans interact with one another through trade, communication, emigration, and other forms of contact
Regions
an area that has some kind of unifying characteristics, such as common language or a common government; formal, functional, or vernacular
Formal regions
areas defined by actual political boundaries, such as a city, county, or state
Functional regions
defined by a common function, such as the area covered by a telephone service
Vernacular regions
less formally defined areas that are formed by people’s perceptions (ex. the South)
Mountain ranges
rows or chains of mountains
Mountain Ranges in Asia
Himalayan (largest mountain range on Earth), Mt. Everest (highest beak of 29,035 feet), Karakoram and Pamir
Mountain Ranges in Europe
Alps, Caucasus, Carpathians, Pyrenees, Urals
Mountain Ranges in Africa
Abyssinian, Atlas, Ruwenzori, Kilimanjaro (inactive volcano)
Mountain Ranges in North America
Rocky Mountains, Appalachians
Mountain Ranges in South America
Andes
Mountain Ranges in Australia
Kosciusko
Island
an area of land which is completely surrounded by water
Plateau
a large, flat area that rises above the surrounding land; at least one side has a steep slope
Plains
an extensive area of level and rolling, treeless country, often covered by rich, fertile soil
Valleys
an elongated depression in the Earth’s surface, usually between ranges of hills or mountains
Ice cap
a region which is covered by perennial ice and snow; a larger glacier forming on an extensive area of relatively level land, flowing outward from its center
Continents
a great division of land on the globe; the large part of the surface of the Earth that rises above sea level
Africa, Antarctica, Asia, Australia, Europe, North America, South America
The 7 continents
water
The majority of the surface of the earth is covered with
El Nino
the surface temperature of the Pacific Ocean near the equator becomes warmer than normal which changes weather patters around the world
Gulf Stream
a strong, warm current in the Atlantic Ocean which accelerates as it travels up the East Coast of North America, and shoots out into the open ocean towards Europe; these current impacts weather on the east coasts of the U.S., Canada, and Western and Northern Europe
Oceans
largest bodies of water on the earth which covers 71% of Earth’s surface
Atlantic, Pacific, Indian, Southern, Arctic
The 5 oceans
Seas
large bodies of salt water, smaller than oceans; Ex. Mediterranean, Sea of Japan, Arabian, Black, Red, East China, South China, Caribbean, Bering, Gulf of Mexico, Sea of Okhotsk, Andaman, and Hudson Bay
Lakes
bodies of water in a depression on Earth’s surface; Caspian Sea is the largest
Bays
bodies of water, smaller than a gulf and nearly surrounded by land
Rivers
a channeled flow of water that starts out as a spring or stream formed by runoff from rain on snow
Rivers in Africa
Nile (world’s largest), Congo (5th largest), Niger (largest delta in Africa), Zambezi (famous for the Victoria Falls, one of the “Seven Natural Wonders of the World)