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23
Computer Science
8th Grade
09/08/2008

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Term
atmosphere
Definition
. the gaseous envelope surrounding the earth; the air
Term
hydrosphere
Definition
the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere.
Term
biosphere
Definition
the ecosystem comprising the entire earth and the living organisms that inhabit it.
Term
geosphere
Definition
the solid part of the earth consisting of the crust and outer mantle
Term
relief map
Definition
a map showing the relief of an area, usually by generalized contour lines
Term
map scale
Definition
a ratio which compares a measurement on a map to the actual distance between locations identified on the map
Term
map legend
Definition
explanatory table of symbols used on a map or chart
Term
equator
Definition
the great circle of the earth that is equidistant from the North Pole and South Pole.
Term
prime meridian
Definition
the meridian running through Greenwich, England, from which longitude east and west is reckoned.
Term
latitude
Definition
the angular distance north or south from the equator of a point on the earth's surface, measured on the meridian of the point.
Term
longitude
Definition
Angular distance on the earth's surface, measured east or west from the prime meridian at Greenwich, England, to the meridian passing through a position, expressed in degrees (or hours), minutes, and seconds.
Term
projection
Definition
systematic construction of lines drawn on a plane surface representative of and corresponding to the meridians and parallels of the curved surface of the earth or celestial sphere.
Term
topography
Definition
the detailed mapping or charting of the features of a relatively small area, district, or locality
Term
contour lines
Definition
Contour lines are lines drawn on a map connecting points of equal elevation
Term
elevation
Definition
the altitude of a place above sea level or ground level
Term
slope
Definition
to have or take an inclined or oblique direction or angle considered with reference to a vertical or horizontal plane; slant.
Term
relief
Definition
how riged or how rough somthing is
Term
contour interval
Definition
any of the spaces between vertical lines on a topographic map or globe; the difference in elevation such an interval represents
Term
remote sensing
Definition
the technique or process of obtaining data or images from a distance, as from satellites or aircraft
Term
sensor
Definition
a mechanical device sensitive to light, temperature, radiation level, or the like, that transmits a signal to a measuring or control instrument.
Term
false-color image
Definition
a photo that highlights special features like wildfires
Term
geographic information systems
Definition
A computer application used to store, view, and analyze geographical information, especially maps.
Term
system
Definition
an assemblage or combination of things or parts forming a complex or unitary whole
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