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meteorology
the study of weather and weather forcasting; the study of places and human activities over time and the various geographic factors that have shaped them.
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cartography
studying and making maps
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geographic information system (GIS)
computer tools that process and organize data and satellite images with other information gathered by geographers and other scientists.
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desalination
turning ocean water into fresh water by removing salt
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chaparral
thickets of woody bushes and short trees
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climate
term for weather patterns that an area typically experiences over a long period of time
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coniferous
tress such as evergreens that have cones and needle-shaped leaves and keep their foliage throughout the winter
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current
cold and warm streams of water that move through the ocean
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deciduous
trees, usually broad leaved such as oak and maple that lose their foliage in autumn
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El Niño
a periodic change in the pattern of ocean currents and water temperatures in the mid-Pacific region
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equinox
one of two days (around March 21 & Sept. 23) on which the sun is directly above the equator, making the length of day and night equal
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greenhouse effect
the capacity of certain gases in the atmosphere to trap heat, thereby warming the earth
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global warming
gradual warming of the earth and its atmosphere that may be caused in part by pollution and an increase in the greenhouse effect
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leeward
opposite side of the mountain (facing away from the directions the wind is blowing)
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weather
condition of the atmosphere in one place during a short period of time
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permafrost
frozen subsoil (below a thin layer of surface soil that thaws in the summer)
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rain shadow (effect)
causes dry areas (deserts, too) to develop on the leeward sides of mountain ranges
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revolution (of the earth)
one trip around the sun (a few hours more than 365 days)
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rotation (of the earth)
one spin of the earth on its axis (takes a little less than 24 hours)
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windward
the side of the mountain range facing the wind
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solstice
one of two says (about June 21 & Dec. 22) on which the sun's rays strike directly on the Tropic of Cancer or Capricorn, marking the beginning of summer or winter
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culture
way of life a group of people who share similar beliefs and customs
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cultural diffusion
process of spreading new knowledge and skills from one culture to another
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culture hearth
warly centers of civilization whose ideas and practices spread to surrounding areas
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death rate
number of deaths per year for every 1000 people
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democracy
any system of gov't in which leaders rule with the consent of the citizens
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developed country
countries having much technology and manufacturing; most people work in manufacturing or service industries and enjoy high standard living
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developing country
working toward greater manufacturing and technology use
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doubling time
number of years it takes a population to double in size
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ethnic group
people who share a common language, history, place of origin, or a combination of these elements
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free trade
the removal of barriers so that goods can flow freely among countries
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industrialization
spread of industry
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language family
large groups of languages having similar roots
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market economy
individuals and private groups make decisions about what to produce. Shoppers choose what products they want and businesses make more of what they think customers like
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mixed economy
one in which the gov't supports and regulates free enterprise through decisions that affect the market place
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population density
average number of people living on a square mile or square km of land
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oligarchy
any system of gov't in which a small group holds the power
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population distribution
pattern of human settlement
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traditional economy
habit and custom determine the rules for all economic activity. Individuals cannot make choices based on what they want.
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autocracy
any system of gov't in which power and authority to rule belong to a single individual
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birth rate
number of births per year for every 1000 people
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command economy
gov't owns the means of production -- land labor, capital (machinary, factories), and business managers -- and controls the distribution of goods
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